1397562642 has 48 divisors (see below), whose sum is σ = 3464128512. Its totient is φ = 398900160.

The previous prime is 1397562629. The next prime is 1397562701. The reversal of 1397562642 is 2462657931.

1397562642 is a `hidden beast` number, since 13 + 9 + 7 + 5 + 626 + 4 + 2 = 666.

It is a super-3 number, since 3×1397562642³ (a number of 28 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 133167 + ... + 143277.

It is an arithmetic number, because the mean of its divisors is an integer number (72169344).

Almost surely, 2^1397562642 is an apocalyptic number.

1397562642 is an abundant number, since it is smaller than the sum of its proper divisors (2066565870).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1397562642 is a wasteful number, since it uses less digits than its factorization.

1397562642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11223 (or 11220 counting only the distinct ones).

The product of its digits is 544320, while the sum is 45.

The square root of 1397562642 is about 37383.9891129879. The cubic root of 1397562642 is about 1118.0393636741.

The spelling of 1397562642 in words is "one billion, three hundred ninety-seven million, five hundred sixty-two thousand, six hundred forty-two".