42017312 has 12 divisors (see below), whose sum is σ = 82721646. Its totient is φ = 21008640.

The previous prime is 42017309. The next prime is 42017329. The reversal of 42017312 is 21371024.

It can be written as a sum of positive squares in only one way, i.e., 32307856 + 9709456 = 5684^2 + 3116^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656489 + ... + 656552.

Almost surely, 2^42017312 is an apocalyptic number.

It is an amenable number.

42017312 is a deficient number, since it is larger than the sum of its proper divisors (40704334).

42017312 is a wasteful number, since it uses less digits than its factorization.

42017312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1313051 (or 1313043 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 42017312 is about 6482.0762105980. The cubic root of 42017312 is about 347.6504174307.

Adding to 42017312 its reverse (21371024), we get a palindrome (63388336).

The spelling of 42017312 in words is "forty-two million, seventeen thousand, three hundred twelve".