42099124 has 6 divisors (see below), whose sum is σ = 73673474. Its totient is φ = 21049560.

The previous prime is 42099091. The next prime is 42099143. The reversal of 42099124 is 42199024.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 37822500 + 4276624 = 6150^2 + 2068^2 .

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, 5262387 + ... + 5262394.

Almost surely, 2^42099124 is an apocalyptic number.

It is an amenable number.

42099124 is a deficient number, since it is larger than the sum of its proper divisors (31574350).

42099124 is a wasteful number, since it uses less digits than its factorization.

42099124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10524785 (or 10524783 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 42099124 is about 6488.3837740997. The cubic root of 42099124 is about 347.8759081053.

The spelling of 42099124 in words is "forty-two million, ninety-nine thousand, one hundred twenty-four".