42973290 has 36 divisors (see below), whose sum is σ = 111892482. Its totient is φ = 11442960.

The previous prime is 42973279. The next prime is 42973291. The reversal of 42973290 is 9237924.

It can be written as a sum of positive squares in only one way, i.e., 38675961 + 4297329 = 6219^2 + 2073^2 .

It is not an unprimeable number, because it can be changed into a prime (42973291) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 61845 + ... + 62535.

Almost surely, 2^42973290 is an apocalyptic number.

42973290 is an abundant number, since it is smaller than the sum of its proper divisors (68919192).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42973290 is an equidigital number, since it uses as much as digits as its factorization.

42973290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1395 (or 701 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 42973290 is about 6555.4015895291. The cubic root of 42973290 is about 350.2672516634.

The spelling of 42973290 in words is "forty-two million, nine hundred seventy-three thousand, two hundred ninety".