124620401 has 4 divisors (see below), whose sum is σ = 125601792. Its totient is φ = 123639012.

The previous prime is 124620389. The next prime is 124620481. The reversal of 124620401 is 104026421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-124620401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (124620481) 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, 490505 + ... + 490758.

It is an arithmetic number, because the mean of its divisors is an integer number (31400448).

Almost surely, 2^124620401 is an apocalyptic number.

It is an amenable number.

124620401 is a deficient number, since it is larger than the sum of its proper divisors (981391).

124620401 is an equidigital number, since it uses as much as digits as its factorization.

124620401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 981390.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 124620401 is about 11163.3507962439. The cubic root of 124620401 is about 499.4933547947.

Adding to 124620401 its reverse (104026421), we get a palindrome (228646822).

The spelling of 124620401 in words is "one hundred twenty-four million, six hundred twenty thousand, four hundred one".