42531002402 has 16 divisors (see below), whose sum is σ = 74688590592. Its totient is φ = 17782997280.

The previous prime is 42531002399. The next prime is 42531002417. The reversal of 42531002402 is 20420013524.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37047338 + ... + 37048485.

It is an arithmetic number, because the mean of its divisors is an integer number (4668036912).

Almost surely, 2^42531002402 is an apocalyptic number.

42531002402 is a deficient number, since it is larger than the sum of its proper divisors (32157588190).

42531002402 is a wasteful number, since it uses less digits than its factorization.

42531002402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74095873.

The product of its (nonzero) digits is 1920, while the sum is 23.

Adding to 42531002402 its reverse (20420013524), we get a palindrome (62951015926).

The spelling of 42531002402 in words is "forty-two billion, five hundred thirty-one million, two thousand, four hundred two".