42486731 has 16 divisors (see below), whose sum is σ = 50181120. Its totient is φ = 35217600.

The previous prime is 42486677. The next prime is 42486733. The reversal of 42486731 is 13768424.

It is a cyclic number.

It is not a de Polignac number, because 42486731 - 2¹⁴ = 42470347 is a prime.

It is a super-2 number, since 2×42486731² = 3610244622132722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42486691 and 42486700.

It is not an unprimeable number, because it can be changed into a prime (42486733) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28556 + ... + 30006.

It is an arithmetic number, because the mean of its divisors is an integer number (3136320).

Almost surely, 2^42486731 is an apocalyptic number.

42486731 is a deficient number, since it is larger than the sum of its proper divisors (7694389).

42486731 is a wasteful number, since it uses less digits than its factorization.

42486731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1594.

The product of its digits is 32256, while the sum is 35.

The square root of 42486731 is about 6518.1846399132. The cubic root of 42486731 is about 348.9402803648.

The spelling of 42486731 in words is "forty-two million, four hundred eighty-six thousand, seven hundred thirty-one".