125540222042 has 16 divisors (see below), whose sum is σ = 194459616000. Its totient is φ = 60721907520.

The previous prime is 125540222039. The next prime is 125540222053. The reversal of 125540222042 is 240222045521.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 125540221996 and 125540222014.

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, 226292 + ... + 549807.

It is an arithmetic number, because the mean of its divisors is an integer number (12153726000).

Almost surely, 2^125540222042 is an apocalyptic number.

125540222042 is a deficient number, since it is larger than the sum of its proper divisors (68919393958).

125540222042 is a wasteful number, since it uses less digits than its factorization.

125540222042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 778741.

The product of its (nonzero) digits is 12800, while the sum is 29.

Adding to 125540222042 its reverse (240222045521), we get a palindrome (365762267563).

The spelling of 125540222042 in words is "one hundred twenty-five billion, five hundred forty million, two hundred twenty-two thousand, forty-two".