125545309142 has 32 divisors (see below), whose sum is σ = 215541347328. Its totient is φ = 54319860000.

The previous prime is 125545309133. The next prime is 125545309147. The reversal of 125545309142 is 241903545521.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 125545309142.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125545309147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1467284 + ... + 1550487.

It is an arithmetic number, because the mean of its divisors is an integer number (6735667104).

Almost surely, 2^125545309142 is an apocalyptic number.

125545309142 is a deficient number, since it is larger than the sum of its proper divisors (89996038186).

125545309142 is a wasteful number, since it uses less digits than its factorization.

125545309142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3017876.

The product of its (nonzero) digits is 216000, while the sum is 41.

The spelling of 125545309142 in words is "one hundred twenty-five billion, five hundred forty-five million, three hundred nine thousand, one hundred forty-two".