42193090 has 24 divisors (see below), whose sum is σ = 77487228. Its totient is φ = 16537440.

The previous prime is 42193087. The next prime is 42193093. The reversal of 42193090 is 9039124.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (42193087) and next prime (42193093).

It can be written as a sum of positive squares in 2 ways, for example, as 36590401 + 5602689 = 6049^2 + 2367^2 .

It is not an unprimeable number, because it can be changed into a prime (42193093) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 160299 + ... + 160561.

Almost surely, 2^42193090 is an apocalyptic number.

42193090 is a deficient number, since it is larger than the sum of its proper divisors (35294138).

42193090 is an equidigital number, since it uses as much as digits as its factorization.

42193090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 594 (or 331 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 42193090 is about 6495.6208325302. The cubic root of 42193090 is about 348.1345375347.

The spelling of 42193090 in words is "forty-two million, one hundred ninety-three thousand, ninety".