42909192 has 24 divisors (see below), whose sum is σ = 116212590. Its totient is φ = 14303040.

The previous prime is 42909187. The next prime is 42909197. The reversal of 42909192 is 29190924.

It is an interprime number because it is at equal distance from previous prime (42909187) and next prime (42909197).

It can be written as a sum of positive squares in only one way, i.e., 39012516 + 3896676 = 6246^2 + 1974^2 .

It is a tau number, because it is divible by the number of its divisors (24).

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

It is not an unprimeable number, because it can be changed into a prime (42909197) 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, 297909 + ... + 298052.

Almost surely, 2^42909192 is an apocalyptic number.

It is an amenable number.

42909192 is an abundant number, since it is smaller than the sum of its proper divisors (73303398).

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

42909192 is a wasteful number, since it uses less digits than its factorization.

42909192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 595973 (or 595966 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 42909192 is about 6550.5108197758. The cubic root of 42909192 is about 350.0930147343.

The spelling of 42909192 in words is "forty-two million, nine hundred nine thousand, one hundred ninety-two".