142921937 has 4 divisors (see below), whose sum is σ = 142970880. Its totient is φ = 142872996.

The previous prime is 142921927. The next prime is 142921951. The reversal of 142921937 is 739129241.

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 not a de Polignac number, because 142921937 - 2²⁴ = 126144721 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 142921937.

It is not an unprimeable number, because it can be changed into a prime (142921927) 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, 19793 + ... + 26030.

It is an arithmetic number, because the mean of its divisors is an integer number (35742720).

Almost surely, 2^142921937 is an apocalyptic number.

It is an amenable number.

142921937 is a deficient number, since it is larger than the sum of its proper divisors (48943).

142921937 is an equidigital number, since it uses as much as digits as its factorization.

142921937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48942.

The product of its digits is 27216, while the sum is 38.

The square root of 142921937 is about 11954.9963195310. The cubic root of 142921937 is about 522.8369804879.

The spelling of 142921937 in words is "one hundred forty-two million, nine hundred twenty-one thousand, nine hundred thirty-seven".