42979932 has 18 divisors (see below), whose sum is σ = 108643808. Its totient is φ = 14326632.

The previous prime is 42979883. The next prime is 42979933. The reversal of 42979932 is 23997924.

Added to its reverse (23997924) it gives a square (66977856 = 8184²).

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 (42979933) 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, 596908 + ... + 596979.

Almost surely, 2^42979932 is an apocalyptic number.

It is an amenable number.

42979932 is an abundant number, since it is smaller than the sum of its proper divisors (65663876).

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

42979932 is a wasteful number, since it uses less digits than its factorization.

42979932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1193897 (or 1193892 counting only the distinct ones).

The product of its digits is 244944, while the sum is 45.

The square root of 42979932 is about 6555.9081750738. The cubic root of 42979932 is about 350.2852966337.

Adding to 42979932 its reverse (23997924), we get a square (66977856 = 8184²).

The spelling of 42979932 in words is "forty-two million, nine hundred seventy-nine thousand, nine hundred thirty-two".