42929090 has 16 divisors (see below), whose sum is σ = 77372280. Its totient is φ = 17149440.

The previous prime is 42929083. The next prime is 42929123. The reversal of 42929090 is 9092924.

It can be written as a sum of positive squares in 4 ways, for example, as 18653761 + 24275329 = 4319^2 + 4927^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 42929090.

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, 6980 + ... + 11600.

Almost surely, 2^42929090 is an apocalyptic number.

42929090 is a deficient number, since it is larger than the sum of its proper divisors (34443190).

42929090 is a wasteful number, since it uses less digits than its factorization.

42929090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5557.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 42929090 is about 6552.0294565882. The cubic root of 42929090 is about 350.1471218224.

The spelling of 42929090 in words is "forty-two million, nine hundred twenty-nine thousand, ninety".