124999890 has 32 divisors (see below), whose sum is σ = 304482240. Its totient is φ = 32835264.

The previous prime is 124999829. The next prime is 124999891. The reversal of 124999890 is 98999421.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (124999891) 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, 29085 + ... + 33104.

It is an arithmetic number, because the mean of its divisors is an integer number (9515070).

Almost surely, 2^124999890 is an apocalyptic number.

124999890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

124999890 is an abundant number, since it is smaller than the sum of its proper divisors (179482350).

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

124999890 is a wasteful number, since it uses less digits than its factorization.

124999890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62266.

The product of its (nonzero) digits is 419904, while the sum is 51.

The square root of 124999890 is about 11180.3349681483. The cubic root of 124999890 is about 499.9998533333. Note that the first 3 decimals are identical.

The spelling of 124999890 in words is "one hundred twenty-four million, nine hundred ninety-nine thousand, eight hundred ninety".