126642532 has 6 divisors (see below), whose sum is σ = 221624438. Its totient is φ = 63321264.

The previous prime is 126642499. The next prime is 126642553. The reversal of 126642532 is 235246621.

It can be written as a sum of positive squares in only one way, i.e., 76317696 + 50324836 = 8736^2 + 7094^2 .

It is a super-2 number, since 2×126642532² = 32076661822742048, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 126642494 and 126642503.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15830313 + ... + 15830320.

Almost surely, 2^126642532 is an apocalyptic number.

It is an amenable number.

126642532 is a deficient number, since it is larger than the sum of its proper divisors (94981906).

126642532 is a wasteful number, since it uses less digits than its factorization.

126642532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31660637 (or 31660635 counting only the distinct ones).

The product of its digits is 17280, while the sum is 31.

The square root of 126642532 is about 11253.5564156403. The cubic root of 126642532 is about 502.1805195125.

The spelling of 126642532 in words is "one hundred twenty-six million, six hundred forty-two thousand, five hundred thirty-two".