142499957 has 2 divisors, whose sum is σ = 142499958. Its totient is φ = 142499956.

The previous prime is 142499953. The next prime is 142499977. The reversal of 142499957 is 759994241.

142499957 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 142301041 + 198916 = 11929^2 + 446^2 .

It is a cyclic number.

It is not a de Polignac number, because 142499957 - 2² = 142499953 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142499953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71249978 + 71249979.

It is an arithmetic number, because the mean of its divisors is an integer number (71249979).

Almost surely, 2^142499957 is an apocalyptic number.

It is an amenable number.

142499957 is a deficient number, since it is larger than the sum of its proper divisors (1).

142499957 is an equidigital number, since it uses as much as digits as its factorization.

142499957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 816480, while the sum is 50.

The square root of 142499957 is about 11937.3345852414. The cubic root of 142499957 is about 522.3219108735.

The spelling of 142499957 in words is "one hundred forty-two million, four hundred ninety-nine thousand, nine hundred fifty-seven".