940012521 has 12 divisors (see below), whose sum is σ = 1457978832. Its totient is φ = 537149928.

The previous prime is 940012397. The next prime is 940012529. The reversal of 940012521 is 125210049.

It is not a de Polignac number, because 940012521 - 2¹⁰ = 940011497 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 940012491 and 940012500.

It is not an unprimeable number, because it can be changed into a prime (940012529) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3197175 + ... + 3197468.

It is an arithmetic number, because the mean of its divisors is an integer number (121498236).

Almost surely, 2^940012521 is an apocalyptic number.

It is an amenable number.

940012521 is a deficient number, since it is larger than the sum of its proper divisors (517966311).

940012521 is a wasteful number, since it uses less digits than its factorization.

940012521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6394660 (or 6394653 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 940012521 is about 30659.6236278269. The cubic root of 940012521 is about 979.5904581280.

The spelling of 940012521 in words is "nine hundred forty million, twelve thousand, five hundred twenty-one".