90742037 has 4 divisors (see below), whose sum is σ = 90769260. Its totient is φ = 90714816.

The previous prime is 90742031. The next prime is 90742063. The reversal of 90742037 is 73024709.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 29495761 + 61246276 = 5431^2 + 7826^2 .

It is a cyclic number.

It is not a de Polignac number, because 90742037 - 2⁴ = 90742021 is a prime.

It is a super-3 number, since 3×90742037³ (a number of 25 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 90741994 and 90742012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90742031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7778 + ... + 15555.

It is an arithmetic number, because the mean of its divisors is an integer number (22692315).

Almost surely, 2^90742037 is an apocalyptic number.

90742037 is the 7778-th pentagonal number.

It is an amenable number.

90742037 is a deficient number, since it is larger than the sum of its proper divisors (27223).

90742037 is a wasteful number, since it uses less digits than its factorization.

90742037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27222.

The product of its (nonzero) digits is 10584, while the sum is 32.

The square root of 90742037 is about 9525.8614833515. The cubic root of 90742037 is about 449.3687230655.

It can be divided in two parts, 9074 and 2037, that added together give a palindrome (11111).

The spelling of 90742037 in words is "ninety million, seven hundred forty-two thousand, thirty-seven".