42700090 has 16 divisors (see below), whose sum is σ = 81381672. Its totient is φ = 16075264.

The previous prime is 42700081. The next prime is 42700103. The reversal of 42700090 is 9000724.

42700090 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 28869129 + 13830961 = 5373^2 + 3719^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125419 + ... + 125758.

Almost surely, 2^42700090 is an apocalyptic number.

42700090 is a deficient number, since it is larger than the sum of its proper divisors (38681582).

42700090 is a wasteful number, since it uses less digits than its factorization.

42700090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251201.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 42700090 is about 6534.5305875786. The cubic root of 42700090 is about 349.5234057389.

The spelling of 42700090 in words is "forty-two million, seven hundred thousand, ninety".