124811641 has 4 divisors (see below), whose sum is σ = 125356900. Its totient is φ = 124266384.

The previous prime is 124811633. The next prime is 124811669. The reversal of 124811641 is 146118421.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 51538041 + 73273600 = 7179^2 + 8560^2 .

It is a cyclic number.

It is not a de Polignac number, because 124811641 - 2³ = 124811633 is a prime.

It is a super-2 number, since 2×124811641² = 31155891458225762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (124811341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 272286 + ... + 272743.

It is an arithmetic number, because the mean of its divisors is an integer number (31339225).

Almost surely, 2^124811641 is an apocalyptic number.

It is an amenable number.

124811641 is a deficient number, since it is larger than the sum of its proper divisors (545259).

124811641 is an equidigital number, since it uses as much as digits as its factorization.

124811641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 545258.

The product of its digits is 1536, while the sum is 28.

The square root of 124811641 is about 11171.9130411940. The cubic root of 124811641 is about 499.7487284130.

The spelling of 124811641 in words is "one hundred twenty-four million, eight hundred eleven thousand, six hundred forty-one".