142492621 has 4 divisors (see below), whose sum is σ = 142623612. Its totient is φ = 142361632.

The previous prime is 142492607. The next prime is 142492627. The reversal of 142492621 is 126294241.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 23377225 + 119115396 = 4835^2 + 10914^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142492621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142492627) 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, 63850 + ... + 66043.

It is an arithmetic number, because the mean of its divisors is an integer number (35655903).

Almost surely, 2^142492621 is an apocalyptic number.

It is an amenable number.

142492621 is a deficient number, since it is larger than the sum of its proper divisors (130991).

142492621 is a wasteful number, since it uses less digits than its factorization.

142492621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130990.

The product of its digits is 6912, while the sum is 31.

The square root of 142492621 is about 11937.0273100132. The cubic root of 142492621 is about 522.3129475508.

The spelling of 142492621 in words is "one hundred forty-two million, four hundred ninety-two thousand, six hundred twenty-one".