155122001442 has 48 divisors (see below), whose sum is σ = 339702854400. Its totient is φ = 51155460000.

The previous prime is 155122001413. The next prime is 155122001483. The reversal of 155122001442 is 244100221551.

It is a happy number.

155122001442 is a `hidden beast` number, since 1 + 5 + 5 + 12 + 200 + 1 + 442 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 557967 + ... + 788397.

It is an arithmetic number, because the mean of its divisors is an integer number (7077142800).

Almost surely, 2^155122001442 is an apocalyptic number.

155122001442 is an abundant number, since it is smaller than the sum of its proper divisors (184580852958).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155122001442 is a wasteful number, since it uses less digits than its factorization.

155122001442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230839 (or 230836 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

Adding to 155122001442 its reverse (244100221551), we get a palindrome (399222222993).

The spelling of 155122001442 in words is "one hundred fifty-five billion, one hundred twenty-two million, one thousand, four hundred forty-two".