82531742 has 4 divisors (see below), whose sum is σ = 123797616. Its totient is φ = 41265870.

The previous prime is 82531733. The next prime is 82531777. The reversal of 82531742 is 24713528.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×82531742² = 13622976875109128, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 82531699 and 82531708.

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, 20632934 + ... + 20632937.

It is an arithmetic number, because the mean of its divisors is an integer number (30949404).

Almost surely, 2^82531742 is an apocalyptic number.

82531742 is a deficient number, since it is larger than the sum of its proper divisors (41265874).

82531742 is a wasteful number, since it uses less digits than its factorization.

82531742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41265873.

The product of its digits is 13440, while the sum is 32.

The square root of 82531742 is about 9084.6982338435. The cubic root of 82531742 is about 435.3852086133.

The spelling of 82531742 in words is "eighty-two million, five hundred thirty-one thousand, seven hundred forty-two".