402135541242122 has 16 divisors (see below), whose sum is σ = 613783088082432. Its totient is φ = 197548610777520.

The previous prime is 402135541242101. The next prime is 402135541242133. The reversal of 402135541242122 is 221242145531204.

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, 1857948698 + ... + 1858165125.

It is an arithmetic number, because the mean of its divisors is an integer number (38361443005152).

Almost surely, 2^{402135541242122} is an apocalyptic number.

402135541242122 is a deficient number, since it is larger than the sum of its proper divisors (211647546840310).

402135541242122 is a wasteful number, since it uses less digits than its factorization.

402135541242122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3716114773.

The product of its (nonzero) digits is 153600, while the sum is 38.

Adding to 402135541242122 its reverse (221242145531204), we get a palindrome (623377686773326).

The spelling of 402135541242122 in words is "four hundred two trillion, one hundred thirty-five billion, five hundred forty-one million, two hundred forty-two thousand, one hundred twenty-two".