90135043 has 4 divisors (see below), whose sum is σ = 90962080. Its totient is φ = 89308008.

The previous prime is 90135013. The next prime is 90135061. The reversal of 90135043 is 34053109.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 90135043 - 2⁹ = 90134531 is a prime.

It is a super-2 number, since 2×90135043² = 16248651953223698, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 90134999 and 90135017.

It is not an unprimeable number, because it can be changed into a prime (90135013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 413355 + ... + 413572.

It is an arithmetic number, because the mean of its divisors is an integer number (22740520).

Almost surely, 2^90135043 is an apocalyptic number.

90135043 is a deficient number, since it is larger than the sum of its proper divisors (827037).

90135043 is a wasteful number, since it uses less digits than its factorization.

90135043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 827036.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 90135043 is about 9493.9477036689. The cubic root of 90135043 is about 448.3645042504.

The spelling of 90135043 in words is "ninety million, one hundred thirty-five thousand, forty-three".