125211043542 has 32 divisors (see below), whose sum is σ = 270299715840. Its totient is φ = 38438704800.

The previous prime is 125211043513. The next prime is 125211043547. The reversal of 125211043542 is 245340112521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125211043547) 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, 1794084 + ... + 1862567.

It is an arithmetic number, because the mean of its divisors is an integer number (8446866120).

Almost surely, 2^125211043542 is an apocalyptic number.

125211043542 is an abundant number, since it is smaller than the sum of its proper divisors (145088672298).

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

125211043542 is a wasteful number, since it uses less digits than its factorization.

125211043542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3657108.

The product of its (nonzero) digits is 9600, while the sum is 30.

The spelling of 125211043542 in words is "one hundred twenty-five billion, two hundred eleven million, forty-three thousand, five hundred forty-two".