42502351 has 4 divisors (see below), whose sum is σ = 42878592. Its totient is φ = 42126112.

The previous prime is 42502337. The next prime is 42502387. The reversal of 42502351 is 15320524.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42502351 - 2⁵ = 42502319 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42502301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 187951 + ... + 188176.

It is an arithmetic number, because the mean of its divisors is an integer number (10719648).

Almost surely, 2^42502351 is an apocalyptic number.

42502351 is a deficient number, since it is larger than the sum of its proper divisors (376241).

42502351 is a wasteful number, since it uses less digits than its factorization.

42502351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376240.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 42502351 is about 6519.3827161780. The cubic root of 42502351 is about 348.9830370816.

Adding to 42502351 its reverse (15320524), we get a palindrome (57822875).

The spelling of 42502351 in words is "forty-two million, five hundred two thousand, three hundred fifty-one".