31426542 has 120 divisors (see below), whose sum is σ = 84915864. Its totient is φ = 8654688.

The previous prime is 31426511. The next prime is 31426559. The reversal of 31426542 is 24562413.

31426542 is a `hidden beast` number, since 3 + 1 + 4 + 2 + 654 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 293653 + ... + 293759.

Almost surely, 2^31426542 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31426542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42457932).

31426542 is an abundant number, since it is smaller than the sum of its proper divisors (53489322).

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

31426542 is a wasteful number, since it uses less digits than its factorization.

31426542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172 (or 156 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 31426542 is about 5605.9381016918. The cubic root of 31426542 is about 315.5722929601.

Adding to 31426542 its reverse (24562413), we get a palindrome (55988955).

The spelling of 31426542 in words is "thirty-one million, four hundred twenty-six thousand, five hundred forty-two".