1523402423402 has 12 divisors (see below), whose sum is σ = 2388775635330. Its totient is φ = 728583767208.

The previous prime is 1523402423399. The next prime is 1523402423513. The reversal of 1523402423402 is 2043242043251.

It can be written as a sum of positive squares in only one way, i.e., 1444368908761 + 79033514641 = 1201819^2 + 281129^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 719943377 + ... + 719945492.

Almost surely, 2^{1523402423402} is an apocalyptic number.

1523402423402 is a deficient number, since it is larger than the sum of its proper divisors (865373211928).

1523402423402 is a wasteful number, since it uses less digits than its factorization.

1523402423402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1439888917 (or 1439888894 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 32.

Adding to 1523402423402 its reverse (2043242043251), we get a palindrome (3566644466653).

The spelling of 1523402423402 in words is "one trillion, five hundred twenty-three billion, four hundred two million, four hundred twenty-three thousand, four hundred two".