42747397 has 32 divisors (see below), whose sum is σ = 57139200. Its totient is φ = 30974400.

The previous prime is 42747373. The next prime is 42747427. The reversal of 42747397 is 79374724.

It is a cyclic number.

It is not a de Polignac number, because 42747397 - 2²³ = 34358789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42747307) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 89004 + ... + 89482.

It is an arithmetic number, because the mean of its divisors is an integer number (1785600).

Almost surely, 2^42747397 is an apocalyptic number.

It is an amenable number.

42747397 is a deficient number, since it is larger than the sum of its proper divisors (14391803).

42747397 is a wasteful number, since it uses less digits than its factorization.

42747397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577.

The product of its digits is 296352, while the sum is 43.

The square root of 42747397 is about 6538.1493558957. The cubic root of 42747397 is about 349.6524359215.

The spelling of 42747397 in words is "forty-two million, seven hundred forty-seven thousand, three hundred ninety-seven".