90242357 has 4 divisors (see below), whose sum is σ = 90261696. Its totient is φ = 90223020.

The previous prime is 90242309. The next prime is 90242359. The reversal of 90242357 is 75324209.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 90242357 - 2⁶ = 90242293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90242359) 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, 2132 + ... + 13602.

It is an arithmetic number, because the mean of its divisors is an integer number (22565424).

Almost surely, 2^90242357 is an apocalyptic number.

It is an amenable number.

90242357 is a deficient number, since it is larger than the sum of its proper divisors (19339).

90242357 is a wasteful number, since it uses less digits than its factorization.

90242357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19338.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 90242357 is about 9499.5977283251. The cubic root of 90242357 is about 448.5423733086.

The spelling of 90242357 in words is "ninety million, two hundred forty-two thousand, three hundred fifty-seven".