125434640 has 40 divisors (see below), whose sum is σ = 304319808. Its totient is φ = 47991680.

The previous prime is 125434613. The next prime is 125434651. The reversal of 125434640 is 46434521.

It is a tau number, because it is divible by the number of its divisors (40).

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, 32246 + ... + 35925.

Almost surely, 2^125434640 is an apocalyptic number.

125434640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125434640 is an abundant number, since it is smaller than the sum of its proper divisors (178885168).

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

125434640 is a wasteful number, since it uses less digits than its factorization.

125434640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68207 (or 68201 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 125434640 is about 11199.7607117295. The cubic root of 125434640 is about 500.5788496077.

The spelling of 125434640 in words is "one hundred twenty-five million, four hundred thirty-four thousand, six hundred forty".