191725142 has 48 divisors (see below), whose sum is σ = 348106752. Its totient is φ = 78881040.

The previous prime is 191725139. The next prime is 191725147. The reversal of 191725142 is 241527191.

It is a junction number, because it is equal to n+sod(n) for n = 191725099 and 191725108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191725147) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 677333 + ... + 677615.

It is an arithmetic number, because the mean of its divisors is an integer number (7252224).

Almost surely, 2^191725142 is an apocalyptic number.

191725142 is a deficient number, since it is larger than the sum of its proper divisors (156381610).

191725142 is a wasteful number, since it uses less digits than its factorization.

191725142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 553 (or 546 counting only the distinct ones).

The product of its digits is 5040, while the sum is 32.

The square root of 191725142 is about 13846.4848246766. The cubic root of 191725142 is about 576.6244092720.

The spelling of 191725142 in words is "one hundred ninety-one million, seven hundred twenty-five thousand, one hundred forty-two".