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740121 = 3246707
BaseRepresentation
bin10110100101100011001
31101121020220
42310230121
5142140441
623510253
76201534
oct2645431
91347226
10740121
11466078
122b8389
131cbb55
14153a1b
15e9466
hexb4b19

740121 has 4 divisors (see below), whose sum is σ = 986832. Its totient is φ = 493412.

The previous prime is 740099. The next prime is 740123. The reversal of 740121 is 121047.

740121 is digitally balanced in base 2 and base 7, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 740121 - 218 = 477977 is a prime.

It is a D-number.

740121 is strictly pandigital in base 7.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 740121.

It is not an unprimeable number, because it can be changed into a prime (740123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123351 + ... + 123356.

It is an arithmetic number, because the mean of its divisors is an integer number (246708).

2740121 is an apocalyptic number.

It is an amenable number.

740121 is a deficient number, since it is larger than the sum of its proper divisors (246711).

740121 is a wasteful number, since it uses less digits than its factorization.

740121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246710.

The product of its (nonzero) digits is 56, while the sum is 15.

The square root of 740121 is about 860.3028536510. The cubic root of 740121 is about 90.4553466516.

Adding to 740121 its reverse (121047), we get a palindrome (861168).

It can be divided in two parts, 740 and 121, that added together give a triangular number (861 = T41).

The spelling of 740121 in words is "seven hundred forty thousand, one hundred twenty-one", and thus it is an iban number.

Divisors: 1 3 246707 740121