125490 has 32 divisors (see below), whose sum is σ = 311040. Its totient is φ = 32384.

The previous prime is 125471. The next prime is 125497. The reversal of 125490 is 94521.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (125497) 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, 1366 + ... + 1454.

It is an arithmetic number, because the mean of its divisors is an integer number (9720).

2¹²⁵⁴⁹⁰ is an apocalyptic number.

125490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 125490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (155520).

125490 is an abundant number, since it is smaller than the sum of its proper divisors (185550).

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

125490 is a wasteful number, since it uses less digits than its factorization.

125490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 125490 is about 354.2456774613. The cubic root of 125490 is about 50.0652481499.

The spelling of 125490 in words is "one hundred twenty-five thousand, four hundred ninety".