72742142 has 8 divisors (see below), whose sum is σ = 119032632. Its totient is φ = 33064600.

The previous prime is 72742067. The next prime is 72742147. The reversal of 72742142 is 24124727.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72742147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1653209 + ... + 1653252.

It is an arithmetic number, because the mean of its divisors is an integer number (14879079).

Almost surely, 2^72742142 is an apocalyptic number.

72742142 is a deficient number, since it is larger than the sum of its proper divisors (46290490).

72742142 is a wasteful number, since it uses less digits than its factorization.

72742142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3306474.

The product of its digits is 6272, while the sum is 29.

The square root of 72742142 is about 8528.9003980584. The cubic root of 72742142 is about 417.4412495766.

Adding to 72742142 its reverse (24124727), we get a palindrome (96866869).

The spelling of 72742142 in words is "seventy-two million, seven hundred forty-two thousand, one hundred forty-two".