424156857 has 8 divisors (see below), whose sum is σ = 565788384. Its totient is φ = 282648288.

The previous prime is 424156829. The next prime is 424156877. The reversal of 424156857 is 758651424.

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 424156857 - 2⁶ = 424156793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (424156877) 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, 22363 + ... + 36720.

It is an arithmetic number, because the mean of its divisors is an integer number (70723548).

Almost surely, 2^424156857 is an apocalyptic number.

It is an amenable number.

424156857 is a deficient number, since it is larger than the sum of its proper divisors (141631527).

424156857 is a wasteful number, since it uses less digits than its factorization.

424156857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61479.

The product of its digits is 268800, while the sum is 42.

The square root of 424156857 is about 20595.0687544373. The cubic root of 424156857 is about 751.3497808870.

The spelling of 424156857 in words is "four hundred twenty-four million, one hundred fifty-six thousand, eight hundred fifty-seven".