427157642 has 8 divisors (see below), whose sum is σ = 645782016. Its totient is φ = 211896972.

The previous prime is 427157609. The next prime is 427157669. The reversal of 427157642 is 246751724.

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

It is a super-2 number, since 2×427157642² = 364927302238000328, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 427157596 and 427157605.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 840608 + ... + 841115.

It is an arithmetic number, because the mean of its divisors is an integer number (80722752).

Almost surely, 2^427157642 is an apocalyptic number.

427157642 is a deficient number, since it is larger than the sum of its proper divisors (218624374).

427157642 is a wasteful number, since it uses less digits than its factorization.

427157642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1681852.

The product of its digits is 94080, while the sum is 38.

The square root of 427157642 is about 20667.7923833195. The cubic root of 427157642 is about 753.1174783361.

The spelling of 427157642 in words is "four hundred twenty-seven million, one hundred fifty-seven thousand, six hundred forty-two".