90505142 has 16 divisors (see below), whose sum is σ = 167086752. Its totient is φ = 35804160.

The previous prime is 90505111. The next prime is 90505157. The reversal of 90505142 is 24150509.

It is a Harshad number since it is a multiple of its sum of digits (26).

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, 248459 + ... + 248822.

It is an arithmetic number, because the mean of its divisors is an integer number (10442922).

Almost surely, 2^90505142 is an apocalyptic number.

90505142 is a deficient number, since it is larger than the sum of its proper divisors (76581610).

90505142 is a wasteful number, since it uses less digits than its factorization.

90505142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497303.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 90505142 is about 9513.4190489014. The cubic root of 90505142 is about 448.9773352779.

The spelling of 90505142 in words is "ninety million, five hundred five thousand, one hundred forty-two".