740341921 has 16 divisors (see below), whose sum is σ = 821145600. Its totient is φ = 661838800.

The previous prime is 740341883. The next prime is 740341949. The reversal of 740341921 is 129143047.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-740341921 is a prime.

It is not an unprimeable number, because it can be changed into a prime (740341981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 373110 + ... + 375088.

It is an arithmetic number, because the mean of its divisors is an integer number (51321600).

Almost surely, 2^740341921 is an apocalyptic number.

740341921 is a gapful number since it is divisible by the number (71) formed by its first and last digit.

It is an amenable number.

740341921 is a deficient number, since it is larger than the sum of its proper divisors (80803679).

740341921 is a wasteful number, since it uses less digits than its factorization.

740341921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2540.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 740341921 is about 27209.2249246464. The cubic root of 740341921 is about 904.6434585471.

Adding to 740341921 its reverse (129143047), we get a palindrome (869484968).

The spelling of 740341921 in words is "seven hundred forty million, three hundred forty-one thousand, nine hundred twenty-one".