42758090 has 8 divisors (see below), whose sum is σ = 76964580. Its totient is φ = 17103232.

The previous prime is 42758059. The next prime is 42758119. The reversal of 42758090 is 9085724.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 37002889 + 5755201 = 6083^2 + 2399^2 .

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

It is a super-3 number, since 3×42758090³ (a number of 24 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42758090.

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, 2137895 + ... + 2137914.

Almost surely, 2^42758090 is an apocalyptic number.

42758090 is a deficient number, since it is larger than the sum of its proper divisors (34206490).

42758090 is a wasteful number, since it uses less digits than its factorization.

42758090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4275816.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 42758090 is about 6538.9670438075. The cubic root of 42758090 is about 349.6815879639.

The spelling of 42758090 in words is "forty-two million, seven hundred fifty-eight thousand, ninety".