125142101 has 4 divisors (see below), whose sum is σ = 143019552. Its totient is φ = 107264652.

The previous prime is 125142097. The next prime is 125142119. The reversal of 125142101 is 101241521.

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: 101241521 = 6691 ⋅15131.

It is a cyclic number.

It is not a de Polignac number, because 125142101 - 2² = 125142097 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 125142101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125142181) 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, 8938715 + ... + 8938728.

It is an arithmetic number, because the mean of its divisors is an integer number (35754888).

Almost surely, 2^125142101 is an apocalyptic number.

It is an amenable number.

125142101 is a deficient number, since it is larger than the sum of its proper divisors (17877451).

125142101 is an equidigital number, since it uses as much as digits as its factorization.

125142101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17877450.

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 125142101 is about 11186.6930323487. The cubic root of 125142101 is about 500.1893962491.

Adding to 125142101 its reverse (101241521), we get a palindrome (226383622).

The spelling of 125142101 in words is "one hundred twenty-five million, one hundred forty-two thousand, one hundred one".