123937901 has 4 divisors (see below), whose sum is σ = 127287612. Its totient is φ = 120588192.

The previous prime is 123937889. The next prime is 123937951. The reversal of 123937901 is 109739321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 109739321 = 2939 ⋅37339.

It can be written as a sum of positive squares in 2 ways, for example, as 59521225 + 64416676 = 7715^2 + 8026^2 .

It is a cyclic number.

It is not a de Polignac number, because 123937901 - 2¹⁰ = 123936877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123937951) 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, 1674800 + ... + 1674873.

It is an arithmetic number, because the mean of its divisors is an integer number (31821903).

Almost surely, 2^123937901 is an apocalyptic number.

It is an amenable number.

123937901 is a deficient number, since it is larger than the sum of its proper divisors (3349711).

123937901 is an equidigital number, since it uses as much as digits as its factorization.

123937901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3349710.

The product of its (nonzero) digits is 10206, while the sum is 35.

The square root of 123937901 is about 11132.7400490625. The cubic root of 123937901 is about 498.5798380994.

The spelling of 123937901 in words is "one hundred twenty-three million, nine hundred thirty-seven thousand, nine hundred one".