90125842 has 8 divisors (see below), whose sum is σ = 135572796. Its totient is φ = 44934912.

The previous prime is 90125813. The next prime is 90125843. The reversal of 90125842 is 24852109.

It can be written as a sum of positive squares in 2 ways, for example, as 76055841 + 14070001 = 8721^2 + 3751^2 .

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

It is a super-4 number, since 4×90125842⁴ (a number of 33 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (90125843) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63123 + ... + 64534.

Almost surely, 2^90125842 is an apocalyptic number.

90125842 is a deficient number, since it is larger than the sum of its proper divisors (45446954).

90125842 is a wasteful number, since it uses less digits than its factorization.

90125842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128012.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 90125842 is about 9493.4631194312. The cubic root of 90125842 is about 448.3492473572.

The spelling of 90125842 in words is "ninety million, one hundred twenty-five thousand, eight hundred forty-two".