90871542 has 24 divisors (see below), whose sum is σ = 197236416. Its totient is φ = 30236976.

The previous prime is 90871531. The next prime is 90871553. The reversal of 90871542 is 24517809.

It is an interprime number because it is at equal distance from previous prime (90871531) and next prime (90871553).

It is a junction number, because it is equal to n+sod(n) for n = 90871497 and 90871506.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6768 + ... + 15084.

It is an arithmetic number, because the mean of its divisors is an integer number (8218184).

Almost surely, 2^90871542 is an apocalyptic number.

90871542 is an abundant number, since it is smaller than the sum of its proper divisors (106364874).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90871542 is a wasteful number, since it uses less digits than its factorization.

90871542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8932 (or 8929 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 90871542 is about 9532.6566076829. The cubic root of 90871542 is about 449.5823977681.

The spelling of 90871542 in words is "ninety million, eight hundred seventy-one thousand, five hundred forty-two".