124661990 has 16 divisors (see below), whose sum is σ = 225358848. Its totient is φ = 49649856.

The previous prime is 124661987. The next prime is 124662007. The reversal of 124661990 is 99166421.

It is a super-2 number, since 2×124661990² = 31081223501520200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24422 + ... + 29081.

It is an arithmetic number, because the mean of its divisors is an integer number (14084928).

Almost surely, 2^124661990 is an apocalyptic number.

124661990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

124661990 is a deficient number, since it is larger than the sum of its proper divisors (100696858).

124661990 is a wasteful number, since it uses less digits than its factorization.

124661990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53743.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 124661990 is about 11165.2133880191. The cubic root of 124661990 is about 499.5489131637.

It can be divided in two parts, 1246 and 61990, that added together give a palindrome (63236).

The spelling of 124661990 in words is "one hundred twenty-four million, six hundred sixty-one thousand, nine hundred ninety".