142856437 has 2 divisors, whose sum is σ = 142856438. Its totient is φ = 142856436.

The previous prime is 142856431. The next prime is 142856501. The reversal of 142856437 is 734658241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 106688241 + 36168196 = 10329^2 + 6014^2 .

It is a cyclic number.

It is not a de Polignac number, because 142856437 - 2¹⁵ = 142823669 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 142856437.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142856431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71428218 + 71428219.

It is an arithmetic number, because the mean of its divisors is an integer number (71428219).

Almost surely, 2^142856437 is an apocalyptic number.

It is an amenable number.

142856437 is a deficient number, since it is larger than the sum of its proper divisors (1).

142856437 is an equidigital number, since it uses as much as digits as its factorization.

142856437 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 161280, while the sum is 40.

The square root of 142856437 is about 11952.2565651847. The cubic root of 142856437 is about 522.7570975909.

The spelling of 142856437 in words is "one hundred forty-two million, eight hundred fifty-six thousand, four hundred thirty-seven".