130172742 has 48 divisors (see below), whose sum is σ = 324728352. Its totient is φ = 36915840.

The previous prime is 130172729. The next prime is 130172747. The reversal of 130172742 is 247271031.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130172747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13492 + ... + 21032.

It is an arithmetic number, because the mean of its divisors is an integer number (6765174).

Almost surely, 2^130172742 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 130172742, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162364176).

130172742 is an abundant number, since it is smaller than the sum of its proper divisors (194555610).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

130172742 is a wasteful number, since it uses less digits than its factorization.

130172742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7693 (or 7690 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 130172742 is about 11409.3269740156. The cubic root of 130172742 is about 506.8039810380.

The spelling of 130172742 in words is "one hundred thirty million, one hundred seventy-two thousand, seven hundred forty-two".