42690490 has 8 divisors (see below), whose sum is σ = 76842900. Its totient is φ = 17076192.

The previous prime is 42690481. The next prime is 42690509. The reversal of 42690490 is 9409624.

It can be written as a sum of positive squares in 2 ways, for example, as 42159049 + 531441 = 6493^2 + 729^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2134515 + ... + 2134534.

Almost surely, 2^42690490 is an apocalyptic number.

42690490 is a deficient number, since it is larger than the sum of its proper divisors (34152410).

42690490 is a wasteful number, since it uses less digits than its factorization.

42690490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4269056.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 42690490 is about 6533.7959870201. The cubic root of 42690490 is about 349.4972100394.

The spelling of 42690490 in words is "forty-two million, six hundred ninety thousand, four hundred ninety".