94020021 has 40 divisors (see below), whose sum is σ = 148220160. Its totient is φ = 59276448.

The previous prime is 94020007. The next prime is 94020049. The reversal of 94020021 is 12002049.

It is not a de Polignac number, because 94020021 - 2²² = 89825717 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 94019976 and 94020003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (94020061) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 202836 + ... + 203298.

It is an arithmetic number, because the mean of its divisors is an integer number (3705504).

Almost surely, 2^94020021 is an apocalyptic number.

It is an amenable number.

94020021 is a deficient number, since it is larger than the sum of its proper divisors (54200139).

94020021 is a wasteful number, since it uses less digits than its factorization.

94020021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607 (or 598 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 94020021 is about 9696.3921640990. The cubic root of 94020021 is about 454.7158730089.

It can be divided in two parts, 9 and 4020021, that added together give a triangular number (4020030 = T₂₈₃₅).

The spelling of 94020021 in words is "ninety-four million, twenty thousand, twenty-one".