142477897 has 2 divisors, whose sum is σ = 142477898. Its totient is φ = 142477896.

The previous prime is 142477879. The next prime is 142477927. The reversal of 142477897 is 798774241.

It is a happy number.

Together with previous prime (142477879) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 142468096 + 9801 = 11936^2 + 99^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142477897 is a prime.

It is a super-2 number, since 2×142477897² = 40599902267085218, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 142477897.

It is not a weakly prime, because it can be changed into another prime (142477807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71238948 + 71238949.

It is an arithmetic number, because the mean of its divisors is an integer number (71238949).

Almost surely, 2^142477897 is an apocalyptic number.

It is an amenable number.

142477897 is a deficient number, since it is larger than the sum of its proper divisors (1).

142477897 is an equidigital number, since it uses as much as digits as its factorization.

142477897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 790272, while the sum is 49.

The square root of 142477897 is about 11936.4105576174. The cubic root of 142477897 is about 522.2949564420.

The spelling of 142477897 in words is "one hundred forty-two million, four hundred seventy-seven thousand, eight hundred ninety-seven".