40542532 has 6 divisors (see below), whose sum is σ = 70949438. Its totient is φ = 20271264.

The previous prime is 40542527. The next prime is 40542539. The reversal of 40542532 is 23524504.

It can be written as a sum of positive squares in only one way, i.e., 31203396 + 9339136 = 5586^2 + 3056^2 .

It is a junction number, because it is equal to n+sod(n) for n = 40542497 and 40542506.

It is not an unprimeable number, because it can be changed into a prime (40542539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5067813 + ... + 5067820.

Almost surely, 2^40542532 is an apocalyptic number.

It is an amenable number.

40542532 is a deficient number, since it is larger than the sum of its proper divisors (30406906).

40542532 is a wasteful number, since it uses less digits than its factorization.

40542532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10135637 (or 10135635 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 40542532 is about 6367.3017833302. The cubic root of 40542532 is about 343.5344454891.

The spelling of 40542532 in words is "forty million, five hundred forty-two thousand, five hundred thirty-two".