31426742 has 16 divisors (see below), whose sum is σ = 47842080. Its totient is φ = 15481152.

The previous prime is 31426729. The next prime is 31426751. The reversal of 31426742 is 24762413.

It is a super-2 number, since 2×31426742² = 1975280225469128, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76634 + ... + 77042.

It is an arithmetic number, because the mean of its divisors is an integer number (2990130).

Almost surely, 2^31426742 is an apocalyptic number.

31426742 is a deficient number, since it is larger than the sum of its proper divisors (16415338).

31426742 is a wasteful number, since it uses less digits than its factorization.

31426742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 887.

The product of its digits is 8064, while the sum is 29.

The square root of 31426742 is about 5605.9559398911. The cubic root of 31426742 is about 315.5729623976.

The spelling of 31426742 in words is "thirty-one million, four hundred twenty-six thousand, seven hundred forty-two".