90570742 has 4 divisors (see below), whose sum is σ = 135856116. Its totient is φ = 45285370.

The previous prime is 90570731. The next prime is 90570751. The reversal of 90570742 is 24707509.

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

It is a junction number, because it is equal to n+sod(n) for n = 90570698 and 90570707.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22642684 + ... + 22642687.

It is an arithmetic number, because the mean of its divisors is an integer number (33964029).

Almost surely, 2^90570742 is an apocalyptic number.

90570742 is a deficient number, since it is larger than the sum of its proper divisors (45285374).

90570742 is a wasteful number, since it uses less digits than its factorization.

90570742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45285373.

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 90570742 is about 9516.8661858828. The cubic root of 90570742 is about 449.0857851014.

The spelling of 90570742 in words is "ninety million, five hundred seventy thousand, seven hundred forty-two".