127523990 has 32 divisors (see below), whose sum is σ = 250884864. Its totient is φ = 46284640.

The previous prime is 127523959. The next prime is 127523999. The reversal of 127523990 is 99325721.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127523999) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96917 + ... + 98223.

It is an arithmetic number, because the mean of its divisors is an integer number (7840152).

Almost surely, 2^127523990 is an apocalyptic number.

127523990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

127523990 is a deficient number, since it is larger than the sum of its proper divisors (123360874).

127523990 is a wasteful number, since it uses less digits than its factorization.

127523990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2212.

The product of its (nonzero) digits is 34020, while the sum is 38.

The square root of 127523990 is about 11292.6520357266. The cubic root of 127523990 is about 503.3429199622.

The spelling of 127523990 in words is "one hundred twenty-seven million, five hundred twenty-three thousand, nine hundred ninety".