142457851 has 2 divisors, whose sum is σ = 142457852. Its totient is φ = 142457850.

The previous prime is 142457849. The next prime is 142457863. The reversal of 142457851 is 158754241.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 142457851 - 2¹ = 142457849 is a prime.

Together with 142457849, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 142457851.

It is not a weakly prime, because it can be changed into another prime (142457891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71228925 + 71228926.

It is an arithmetic number, because the mean of its divisors is an integer number (71228926).

Almost surely, 2^142457851 is an apocalyptic number.

142457851 is a deficient number, since it is larger than the sum of its proper divisors (1).

142457851 is an equidigital number, since it uses as much as digits as its factorization.

142457851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 44800, while the sum is 37.

The square root of 142457851 is about 11935.5708284103. The cubic root of 142457851 is about 522.2704604419.

The spelling of 142457851 in words is "one hundred forty-two million, four hundred fifty-seven thousand, eight hundred fifty-one".