90155335042 has 4 divisors (see below), whose sum is σ = 135233002566. Its totient is φ = 45077667520.

The previous prime is 90155335037. The next prime is 90155335091. The reversal of 90155335042 is 24053355109.

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

It can be written as a sum of positive squares in only one way, i.e., 87143630401 + 3011704641 = 295201^2 + 54879^2 .

It is a junction number, because it is equal to n+sod(n) for n = 90155334992 and 90155335010.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22538833759 + ... + 22538833762.

Almost surely, 2^90155335042 is an apocalyptic number.

90155335042 is a deficient number, since it is larger than the sum of its proper divisors (45077667524).

90155335042 is a wasteful number, since it uses less digits than its factorization.

90155335042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45077667523.

The product of its (nonzero) digits is 81000, while the sum is 37.

The spelling of 90155335042 in words is "ninety billion, one hundred fifty-five million, three hundred thirty-five thousand, forty-two".