142468889 has 2 divisors, whose sum is σ = 142468890. Its totient is φ = 142468888.

The previous prime is 142468871. The next prime is 142468927. The reversal of 142468889 is 988864241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 126945289 + 15523600 = 11267^2 + 3940^2 .

It is a cyclic number.

It is not a de Polignac number, because 142468889 - 2⁸ = 142468633 is a prime.

It is not a weakly prime, because it can be changed into another prime (142468819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71234444 + 71234445.

It is an arithmetic number, because the mean of its divisors is an integer number (71234445).

Almost surely, 2^142468889 is an apocalyptic number.

It is an amenable number.

142468889 is a deficient number, since it is larger than the sum of its proper divisors (1).

142468889 is an equidigital number, since it uses as much as digits as its factorization.

142468889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 884736, while the sum is 50.

The square root of 142468889 is about 11936.0332187876. The cubic root of 142468889 is about 522.2839490455.

The spelling of 142468889 in words is "one hundred forty-two million, four hundred sixty-eight thousand, eight hundred eighty-nine".