142454251 has 2 divisors, whose sum is σ = 142454252. Its totient is φ = 142454250.

The previous prime is 142454239. The next prime is 142454309. The reversal of 142454251 is 152454241.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 142454251 - 2⁵ = 142454219 is a prime.

It is not a weakly prime, because it can be changed into another prime (142454231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71227125 + 71227126.

It is an arithmetic number, because the mean of its divisors is an integer number (71227126).

Almost surely, 2^142454251 is an apocalyptic number.

142454251 is a deficient number, since it is larger than the sum of its proper divisors (1).

142454251 is an equidigital number, since it uses as much as digits as its factorization.

142454251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6400, while the sum is 28.

The square root of 142454251 is about 11935.4200177455. The cubic root of 142454251 is about 522.2660610365.

It can be divided in two parts, 14245 and 4251, that added together give a square (18496 = 136²).

The spelling of 142454251 in words is "one hundred forty-two million, four hundred fifty-four thousand, two hundred fifty-one".