129225151442 has 32 divisors (see below), whose sum is σ = 201384414000. Its totient is φ = 62142612480.

The previous prime is 129225151423. The next prime is 129225151477. The reversal of 129225151442 is 244151522921.

It is a Cunningham number, because it is equal to 359479²+1.

It can be written as a sum of positive squares in 8 ways, for example, as 1 + 129225151441 = 1^2 + 359479^2 .

It is a junction number, because it is equal to n+sod(n) for n = 129225151396 and 129225151405.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16451588 + ... + 16459440.

Almost surely, 2^129225151442 is an apocalyptic number.

129225151442 is a deficient number, since it is larger than the sum of its proper divisors (72159262558).

129225151442 is a wasteful number, since it uses less digits than its factorization.

129225151442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10718.

The product of its digits is 57600, while the sum is 38.

The spelling of 129225151442 in words is "one hundred twenty-nine billion, two hundred twenty-five million, one hundred fifty-one thousand, four hundred forty-two".