125021430023 has 4 divisors (see below), whose sum is σ = 142881634320. Its totient is φ = 107161225728.

The previous prime is 125021430019. The next prime is 125021430029. The reversal of 125021430023 is 320034120521.

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

It is a cyclic number.

It is not a de Polignac number, because 125021430023 - 2² = 125021430019 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 (125021430029) 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, 8930102138 + ... + 8930102151.

It is an arithmetic number, because the mean of its divisors is an integer number (35720408580).

Almost surely, 2^125021430023 is an apocalyptic number.

125021430023 is a deficient number, since it is larger than the sum of its proper divisors (17860204297).

125021430023 is an equidigital number, since it uses as much as digits as its factorization.

125021430023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17860204296.

The product of its (nonzero) digits is 1440, while the sum is 23.

Adding to 125021430023 its reverse (320034120521), we get a palindrome (445055550544).

The spelling of 125021430023 in words is "one hundred twenty-five billion, twenty-one million, four hundred thirty thousand, twenty-three".