42102402 has 16 divisors (see below), whose sum is σ = 86921472. Its totient is φ = 13581360.

The previous prime is 42102373. The next prime is 42102409. The reversal of 42102402 is 20420124.

It is a super-2 number, since 2×42102402² = 3545224508339208, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42102409) 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, 112993 + ... + 113364.

It is an arithmetic number, because the mean of its divisors is an integer number (5432592).

Almost surely, 2^42102402 is an apocalyptic number.

42102402 is an abundant number, since it is smaller than the sum of its proper divisors (44819070).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42102402 is a wasteful number, since it uses less digits than its factorization.

42102402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226393.

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 42102402 is about 6488.6363744627. The cubic root of 42102402 is about 347.8849368572.

Adding to 42102402 its reverse (20420124), we get a palindrome (62522526).

The spelling of 42102402 in words is "forty-two million, one hundred two thousand, four hundred two".