125742424647 has 16 divisors (see below), whose sum is σ = 193070161152. Its totient is φ = 71304317760.

The previous prime is 125742424627. The next prime is 125742424649. The reversal of 125742424647 is 746424247521.

It is a happy number.

It is not a de Polignac number, because 125742424647 - 2⁶ = 125742424583 is a prime.

It is a super-2 number, since 2×125742424647² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 125742424596 and 125742424605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125742424649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22851198 + ... + 22856699.

It is an arithmetic number, because the mean of its divisors is an integer number (12066885072).

Almost surely, 2^125742424647 is an apocalyptic number.

125742424647 is a deficient number, since it is larger than the sum of its proper divisors (67327736505).

125742424647 is a wasteful number, since it uses less digits than its factorization.

125742424647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45708038.

The product of its digits is 3010560, while the sum is 48.

The spelling of 125742424647 in words is "one hundred twenty-five billion, seven hundred forty-two million, four hundred twenty-four thousand, six hundred forty-seven".