157140990 has 48 divisors (see below), whose sum is σ = 410686848. Its totient is φ = 41686848.

The previous prime is 157140989. The next prime is 157141007. The reversal of 157140990 is 99041751.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13299 + ... + 22161.

It is an arithmetic number, because the mean of its divisors is an integer number (8555976).

Almost surely, 2^157140990 is an apocalyptic number.

157140990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 157140990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (205343424).

157140990 is an abundant number, since it is smaller than the sum of its proper divisors (253545858).

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

157140990 is a wasteful number, since it uses less digits than its factorization.

157140990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9073 (or 9070 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 36.

The square root of 157140990 is about 12535.5889371022. The cubic root of 157140990 is about 539.6305085524.

The spelling of 157140990 in words is "one hundred fifty-seven million, one hundred forty thousand, nine hundred ninety".