142619621 has 4 divisors (see below), whose sum is σ = 143494752. Its totient is φ = 141744492.

The previous prime is 142619611. The next prime is 142619629. The reversal of 142619621 is 126916241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142619621 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 (142619629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 437321 + ... + 437646.

It is an arithmetic number, because the mean of its divisors is an integer number (35873688).

Almost surely, 2^142619621 is an apocalyptic number.

It is an amenable number.

142619621 is a deficient number, since it is larger than the sum of its proper divisors (875131).

142619621 is an equidigital number, since it uses as much as digits as its factorization.

142619621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 875130.

The product of its digits is 5184, while the sum is 32.

The square root of 142619621 is about 11942.3457076070. The cubic root of 142619621 is about 522.4680761613.

The spelling of 142619621 in words is "one hundred forty-two million, six hundred nineteen thousand, six hundred twenty-one".