125406438 has 16 divisors (see below), whose sum is σ = 251099136. Its totient is φ = 41754440.

The previous prime is 125406409. The next prime is 125406473. The reversal of 125406438 is 834604521.

It is a junction number, because it is equal to n+sod(n) for n = 125406399 and 125406408.

It is a congruent number.

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, 6006 + ... + 16937.

It is an arithmetic number, because the mean of its divisors is an integer number (15693696).

Almost surely, 2^125406438 is an apocalyptic number.

125406438 is an abundant number, since it is smaller than the sum of its proper divisors (125692698).

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

125406438 is a wasteful number, since it uses less digits than its factorization.

125406438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23859.

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 125406438 is about 11198.5015961958. The cubic root of 125406438 is about 500.5413310432.

The spelling of 125406438 in words is "one hundred twenty-five million, four hundred six thousand, four hundred thirty-eight".