42917644 has 24 divisors (see below), whose sum is σ = 93639168. Its totient is φ = 16721040.

The previous prime is 42917629. The next prime is 42917647. The reversal of 42917644 is 44671924.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (42917647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69364 + ... + 69979.

It is an arithmetic number, because the mean of its divisors is an integer number (3901632).

Almost surely, 2^42917644 is an apocalyptic number.

42917644 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

42917644 is an abundant number, since it is smaller than the sum of its proper divisors (50721524).

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

42917644 is a wasteful number, since it uses less digits than its factorization.

42917644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139365 (or 139363 counting only the distinct ones).

The product of its digits is 48384, while the sum is 37.

The square root of 42917644 is about 6551.1559285366. The cubic root of 42917644 is about 350.1159996455.

It can be divided in two parts, 4291 and 7644, that added together give a triangular number (11935 = T₁₅₄).

The spelling of 42917644 in words is "forty-two million, nine hundred seventeen thousand, six hundred forty-four".