142724642 has 8 divisors (see below), whose sum is σ = 216666576. Its totient is φ = 70502452.

The previous prime is 142724641. The next prime is 142724653. The reversal of 142724642 is 246427241.

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

It is a junction number, because it is equal to n+sod(n) for n = 142724599 and 142724608.

It is not an unprimeable number, because it can be changed into a prime (142724641) 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, 429728 + ... + 430059.

It is an arithmetic number, because the mean of its divisors is an integer number (27083322).

Almost surely, 2^142724642 is an apocalyptic number.

142724642 is a deficient number, since it is larger than the sum of its proper divisors (73941934).

142724642 is an equidigital number, since it uses as much as digits as its factorization.

142724642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 859872.

The product of its digits is 21504, while the sum is 32.

The square root of 142724642 is about 11946.7418989447. The cubic root of 142724642 is about 522.5962881999.

The spelling of 142724642 in words is "one hundred forty-two million, seven hundred twenty-four thousand, six hundred forty-two".