942021864 has 144 divisors (see below), whose sum is σ = 2991046500. Its totient is φ = 267047424.

The previous prime is 942021853. The next prime is 942021911. The reversal of 942021864 is 468120249.

It can be written as a sum of positive squares in 2 ways, for example, as 901800900 + 40220964 = 30030^2 + 6342^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 482362 + ... + 484310.

Almost surely, 2^942021864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 942021864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1495523250).

942021864 is an abundant number, since it is smaller than the sum of its proper divisors (2049024636).

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

942021864 is a wasteful number, since it uses less digits than its factorization.

942021864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2112 (or 2098 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 942021864 is about 30692.3746881860. The cubic root of 942021864 is about 980.2879425996.

The spelling of 942021864 in words is "nine hundred forty-two million, twenty-one thousand, eight hundred sixty-four".