491402124 has 18 divisors (see below), whose sum is σ = 1242155460. Its totient is φ = 163800696.

The previous prime is 491402089. The next prime is 491402141. The reversal of 491402124 is 421204194.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×491402124² = 482952094943422752, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6824994 + ... + 6825065.

Almost surely, 2^491402124 is an apocalyptic number.

It is an amenable number.

491402124 is an abundant number, since it is smaller than the sum of its proper divisors (750753336).

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

491402124 is a wasteful number, since it uses less digits than its factorization.

491402124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13650069 (or 13650064 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 491402124 is about 22167.5917501203. The cubic root of 491402124 is about 789.1247712387.

The spelling of 491402124 in words is "four hundred ninety-one million, four hundred two thousand, one hundred twenty-four".