125546039421 has 8 divisors (see below), whose sum is σ = 182612421024. Its totient is φ = 76088508720.

The previous prime is 125546039413. The next prime is 125546039447. The reversal of 125546039421 is 124930645521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 125546039421 - 2³ = 125546039413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125546039401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1902212686 + ... + 1902212751.

It is an arithmetic number, because the mean of its divisors is an integer number (22826552628).

Almost surely, 2^125546039421 is an apocalyptic number.

125546039421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

125546039421 is a deficient number, since it is larger than the sum of its proper divisors (57066381603).

125546039421 is a wasteful number, since it uses less digits than its factorization.

125546039421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3804425451.

The product of its (nonzero) digits is 259200, while the sum is 42.

The spelling of 125546039421 in words is "one hundred twenty-five billion, five hundred forty-six million, thirty-nine thousand, four hundred twenty-one".