42501051 has 16 divisors (see below), whose sum is σ = 64501920. Its totient is φ = 27642240.

The previous prime is 42501047. The next prime is 42501059. The reversal of 42501051 is 15010524.

It is not a de Polignac number, because 42501051 - 2² = 42501047 is a prime.

It is a super-2 number, since 2×42501051² = 3612678672209202, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42501059) 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, 18090 + ... + 20303.

It is an arithmetic number, because the mean of its divisors is an integer number (4031370).

Almost surely, 2^42501051 is an apocalyptic number.

42501051 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

42501051 is a deficient number, since it is larger than the sum of its proper divisors (22000869).

42501051 is a wasteful number, since it uses less digits than its factorization.

42501051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38443 (or 38437 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 42501051 is about 6519.2830127246. The cubic root of 42501051 is about 348.9794789838.

Adding to 42501051 its reverse (15010524), we get a palindrome (57511575).

The spelling of 42501051 in words is "forty-two million, five hundred one thousand, fifty-one".