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742385 = 5721211
BaseRepresentation
bin10110101001111110001
31101201100202
42311033301
5142224020
623524545
76211250
oct2651761
91351322
10742385
11467846
122b9755
131ccba7
14154797
15e9e75
hexb53f1

742385 has 8 divisors (see below), whose sum is σ = 1018176. Its totient is φ = 509040.

The previous prime is 742381. The next prime is 742393. The reversal of 742385 is 583247.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 742385 - 22 = 742381 is a prime.

It is a super-2 number, since 2×7423852 = 1102270976450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (742381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10571 + ... + 10640.

It is an arithmetic number, because the mean of its divisors is an integer number (127272).

2742385 is an apocalyptic number.

It is an amenable number.

742385 is a deficient number, since it is larger than the sum of its proper divisors (275791).

742385 is a wasteful number, since it uses less digits than its factorization.

742385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21223.

The product of its digits is 6720, while the sum is 29.

The square root of 742385 is about 861.6176646286. The cubic root of 742385 is about 90.5474858393.

The spelling of 742385 in words is "seven hundred forty-two thousand, three hundred eighty-five".

Divisors: 1 5 7 35 21211 106055 148477 742385