125742237 has 4 divisors (see below), whose sum is σ = 167656320. Its totient is φ = 83828156.

The previous prime is 125742233. The next prime is 125742241. The reversal of 125742237 is 732247521.

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: 732247521 = 3 ⋅244082507.

It is an interprime number because it is at equal distance from previous prime (125742233) and next prime (125742241).

It is a cyclic number.

It is not a de Polignac number, because 125742237 - 2² = 125742233 is a prime.

It is a super-2 number, since 2×125742237² = 31622220331528338, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 125742198 and 125742207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125742233) 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, 20957037 + ... + 20957042.

It is an arithmetic number, because the mean of its divisors is an integer number (41914080).

Almost surely, 2^125742237 is an apocalyptic number.

It is an amenable number.

125742237 is a deficient number, since it is larger than the sum of its proper divisors (41914083).

125742237 is an equidigital number, since it uses as much as digits as its factorization.

125742237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41914082.

The product of its digits is 23520, while the sum is 33.

The square root of 125742237 is about 11213.4846055987. The cubic root of 125742237 is about 500.9876969580.

Adding to 125742237 its reverse (732247521), we get a palindrome (857989758).

The spelling of 125742237 in words is "one hundred twenty-five million, seven hundred forty-two thousand, two hundred thirty-seven".