142252051 has 4 divisors (see below), whose sum is σ = 142660000. Its totient is φ = 141844104.

The previous prime is 142252049. The next prime is 142252057. The reversal of 142252051 is 150252241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 150252241 = 479 ⋅313679.

It is a cyclic number.

It is not a de Polignac number, because 142252051 - 2¹ = 142252049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142252057) 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, 203451 + ... + 204148.

It is an arithmetic number, because the mean of its divisors is an integer number (35665000).

Almost surely, 2^142252051 is an apocalyptic number.

142252051 is a deficient number, since it is larger than the sum of its proper divisors (407949).

142252051 is an equidigital number, since it uses as much as digits as its factorization.

142252051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407948.

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 142252051 is about 11926.9464239595. The cubic root of 142252051 is about 522.0188420164.

The spelling of 142252051 in words is "one hundred forty-two million, two hundred fifty-two thousand, fifty-one".