142644746 has 8 divisors (see below), whose sum is σ = 214048224. Its totient is φ = 71295340.

The previous prime is 142644727. The next prime is 142644791. The reversal of 142644746 is 647446241.

It is a happy number.

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

It is a super-2 number, since 2×142644746² = 40695047122809032, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6110 + ... + 17961.

It is an arithmetic number, because the mean of its divisors is an integer number (26756028).

Almost surely, 2^142644746 is an apocalyptic number.

142644746 is a deficient number, since it is larger than the sum of its proper divisors (71403478).

142644746 is a wasteful number, since it uses less digits than its factorization.

142644746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27036.

The product of its digits is 129024, while the sum is 38.

The square root of 142644746 is about 11943.3975903007. The cubic root of 142644746 is about 522.4987550622.

The spelling of 142644746 in words is "one hundred forty-two million, six hundred forty-four thousand, seven hundred forty-six".