63172942 has 16 divisors (see below), whose sum is σ = 110073312. Its totient is φ = 26629920.

The previous prime is 63172931. The next prime is 63172943. The reversal of 63172942 is 24927136.

It is a junction number, because it is equal to n+sod(n) for n = 63172898 and 63172907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63172943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36133 + ... + 37840.

It is an arithmetic number, because the mean of its divisors is an integer number (6879582).

Almost surely, 2^63172942 is an apocalyptic number.

63172942 is a deficient number, since it is larger than the sum of its proper divisors (46900370).

63172942 is a wasteful number, since it uses less digits than its factorization.

63172942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74043.

The product of its digits is 18144, while the sum is 34.

The square root of 63172942 is about 7948.1407888889. The cubic root of 63172942 is about 398.2694866050.

The spelling of 63172942 in words is "sixty-three million, one hundred seventy-two thousand, nine hundred forty-two".