90890232542 has 8 divisors (see below), whose sum is σ = 136500206616. Its totient is φ = 45390163672.

The previous prime is 90890232541. The next prime is 90890232547. The reversal of 90890232542 is 24523209809.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×90890232542² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 90890232493 and 90890232502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90890232541) 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, 27474233 + ... + 27477540.

It is an arithmetic number, because the mean of its divisors is an integer number (17062525827).

Almost surely, 2^90890232542 is an apocalyptic number.

90890232542 is a deficient number, since it is larger than the sum of its proper divisors (45609974074).

90890232542 is a wasteful number, since it uses less digits than its factorization.

90890232542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54952602.

The product of its (nonzero) digits is 311040, while the sum is 44.

The spelling of 90890232542 in words is "ninety billion, eight hundred ninety million, two hundred thirty-two thousand, five hundred forty-two".