42557001 has 16 divisors (see below), whose sum is σ = 60285888. Its totient is φ = 26611200.

The previous prime is 42556999. The next prime is 42557051. The reversal of 42557001 is 10075524.

It is not a de Polignac number, because 42557001 - 2¹ = 42556999 is a prime.

It is a super-2 number, since 2×42557001² = 3622196668228002, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42557051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15621 + ... + 18141.

It is an arithmetic number, because the mean of its divisors is an integer number (3767868).

Almost surely, 2^42557001 is an apocalyptic number.

It is an amenable number.

42557001 is a deficient number, since it is larger than the sum of its proper divisors (17728887).

42557001 is a wasteful number, since it uses less digits than its factorization.

42557001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2872.

The product of its (nonzero) digits is 1400, while the sum is 24.

The square root of 42557001 is about 6523.5727174609. The cubic root of 42557001 is about 349.1325484543.

The spelling of 42557001 in words is "forty-two million, five hundred fifty-seven thousand, one".