42402051 has 12 divisors (see below), whose sum is σ = 61448400. Its totient is φ = 28175280.

The previous prime is 42402049. The next prime is 42402071. The reversal of 42402051 is 15020424.

It is not a de Polignac number, because 42402051 - 2¹ = 42402049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42402001) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4776 + ... + 10373.

It is an arithmetic number, because the mean of its divisors is an integer number (5120700).

Almost surely, 2^42402051 is an apocalyptic number.

42402051 is a deficient number, since it is larger than the sum of its proper divisors (19046349).

42402051 is a wasteful number, since it uses less digits than its factorization.

42402051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15466 (or 15463 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 42402051 is about 6511.6857264460. The cubic root of 42402051 is about 348.7083027190.

Adding to 42402051 its reverse (15020424), we get a palindrome (57422475).

The spelling of 42402051 in words is "forty-two million, four hundred two thousand, fifty-one".