10021240402 has 16 divisors (see below), whose sum is σ = 15185192472. Its totient is φ = 4959539200.

The previous prime is 10021240391. The next prime is 10021240409. The reversal of 10021240402 is 20404212001.

It can be written as a sum of positive squares in 4 ways, for example, as 8438075881 + 1583164521 = 91859^2 + 39789^2 .

It is not an unprimeable number, because it can be changed into a prime (10021240409) 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, 1053138 + ... + 1062610.

Almost surely, 2^10021240402 is an apocalyptic number.

10021240402 is a deficient number, since it is larger than the sum of its proper divisors (5163952070).

10021240402 is a wasteful number, since it uses less digits than its factorization.

10021240402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14813.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 10021240402 its reverse (20404212001), we get a palindrome (30425452403).

The spelling of 10021240402 in words is "ten billion, twenty-one million, two hundred forty thousand, four hundred two".