142621286 has 4 divisors (see below), whose sum is σ = 213931932. Its totient is φ = 71310642.

The previous prime is 142621253. The next prime is 142621309. The reversal of 142621286 is 682126241.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35655320 + ... + 35655323.

It is an arithmetic number, because the mean of its divisors is an integer number (53482983).

Almost surely, 2^142621286 is an apocalyptic number.

142621286 is a deficient number, since it is larger than the sum of its proper divisors (71310646).

142621286 is an equidigital number, since it uses as much as digits as its factorization.

142621286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71310645.

The product of its digits is 9216, while the sum is 32.

The square root of 142621286 is about 11942.4154173266. The cubic root of 142621286 is about 522.4701093223.

The spelling of 142621286 in words is "one hundred forty-two million, six hundred twenty-one thousand, two hundred eighty-six".