124002001 has 4 divisors (see below), whose sum is σ = 124024432. Its totient is φ = 123979572.

The previous prime is 124001963. The next prime is 124002017. The reversal of 124002001 is 100200421.

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, and also an emirpimes, since its reverse is a distinct semiprime: 100200421 = 2339 ⋅42839.

It is a cyclic number.

It is not a de Polignac number, because 124002001 - 2⁷ = 124001873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (124002031) 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, 3610 + ... + 16156.

It is an arithmetic number, because the mean of its divisors is an integer number (31006108).

Almost surely, 2^124002001 is an apocalyptic number.

It is an amenable number.

124002001 is a deficient number, since it is larger than the sum of its proper divisors (22431).

124002001 is an equidigital number, since it uses as much as digits as its factorization.

124002001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22430.

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 124002001 is about 11135.6185728499. The cubic root of 124002001 is about 498.6657775343.

Adding to 124002001 its reverse (100200421), we get a palindrome (224202422).

The spelling of 124002001 in words is "one hundred twenty-four million, two thousand, one".