90200542 has 16 divisors (see below), whose sum is σ = 136468800. Its totient is φ = 44713120.

The previous prime is 90200507. The next prime is 90200563. The reversal of 90200542 is 24500209.

It is a happy number.

It is a super-2 number, since 2×90200542² = 16272275554187528, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 209067 + ... + 209497.

It is an arithmetic number, because the mean of its divisors is an integer number (8529300).

Almost surely, 2^90200542 is an apocalyptic number.

90200542 is a deficient number, since it is larger than the sum of its proper divisors (46268258).

90200542 is a wasteful number, since it uses less digits than its factorization.

90200542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1091.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 90200542 is about 9497.3965906452. The cubic root of 90200542 is about 448.4730832412.

The spelling of 90200542 in words is "ninety million, two hundred thousand, five hundred forty-two".