355121025042 has 48 divisors (see below), whose sum is σ = 827842825152. Its totient is φ = 101261391840.

The previous prime is 355121024977. The next prime is 355121025079. The reversal of 355121025042 is 240520121553.

It is a super-2 number, since 2×355121025042² (a number of 24 digits) contains 22 as substring.

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, 1052809 + ... + 1348572.

It is an arithmetic number, because the mean of its divisors is an integer number (17246725524).

Almost surely, 2^355121025042 is an apocalyptic number.

355121025042 is an abundant number, since it is smaller than the sum of its proper divisors (472721800110).

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

355121025042 is a wasteful number, since it uses less digits than its factorization.

355121025042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2401903 (or 2401896 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

Adding to 355121025042 its reverse (240520121553), we get a palindrome (595641146595).

The spelling of 355121025042 in words is "three hundred fifty-five billion, one hundred twenty-one million, twenty-five thousand, forty-two".