42220692 has 18 divisors (see below), whose sum is σ = 106724618. Its totient is φ = 14073552.

The previous prime is 42220691. The next prime is 42220697. The reversal of 42220692 is 29602224.

It can be written as a sum of positive squares in only one way, i.e., 41525136 + 695556 = 6444^2 + 834^2 .

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42220691) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 586363 + ... + 586434.

Almost surely, 2^42220692 is an apocalyptic number.

It is an amenable number.

42220692 is an abundant number, since it is smaller than the sum of its proper divisors (64503926).

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

42220692 is a wasteful number, since it uses less digits than its factorization.

42220692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1172807 (or 1172802 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 42220692 is about 6497.7451473569. The cubic root of 42220692 is about 348.2104355460.

The spelling of 42220692 in words is "forty-two million, two hundred twenty thousand, six hundred ninety-two".