142499977 has 2 divisors, whose sum is σ = 142499978. Its totient is φ = 142499976.

The previous prime is 142499957. The next prime is 142500023. The reversal of 142499977 is 779994241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 128504896 + 13995081 = 11336^2 + 3741^2 .

It is a cyclic number.

It is not a de Polignac number, because 142499977 - 2⁷ = 142499849 is a prime.

It is not a weakly prime, because it can be changed into another prime (142499957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71249988 + 71249989.

It is an arithmetic number, because the mean of its divisors is an integer number (71249989).

Almost surely, 2^142499977 is an apocalyptic number.

It is an amenable number.

142499977 is a deficient number, since it is larger than the sum of its proper divisors (1).

142499977 is an equidigital number, since it uses as much as digits as its factorization.

142499977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1143072, while the sum is 52.

The square root of 142499977 is about 11937.3354229493. The cubic root of 142499977 is about 522.3219353096.

The spelling of 142499977 in words is "one hundred forty-two million, four hundred ninety-nine thousand, nine hundred seventy-seven".