142476989 has 2 divisors, whose sum is σ = 142476990. Its totient is φ = 142476988.

The previous prime is 142476967. The next prime is 142477001. The reversal of 142476989 is 989674241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89624089 + 52852900 = 9467^2 + 7270^2 .

It is a cyclic number.

It is not a de Polignac number, because 142476989 - 2¹⁶ = 142411453 is a prime.

It is a super-2 number, since 2×142476989² = 40599384789012242, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142476959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71238494 + 71238495.

It is an arithmetic number, because the mean of its divisors is an integer number (71238495).

Almost surely, 2^142476989 is an apocalyptic number.

It is an amenable number.

142476989 is a deficient number, since it is larger than the sum of its proper divisors (1).

142476989 is an equidigital number, since it uses as much as digits as its factorization.

142476989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 870912, while the sum is 50.

The square root of 142476989 is about 11936.3725226720. The cubic root of 142476989 is about 522.2938469253.

The spelling of 142476989 in words is "one hundred forty-two million, four hundred seventy-six thousand, nine hundred eighty-nine".