142001456 has 20 divisors (see below), whose sum is σ = 275315712. Its totient is φ = 70952256.

The previous prime is 142001443. The next prime is 142001479. The reversal of 142001456 is 654100241.

It is a super-2 number, since 2×142001456² = 40328827012239872, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37841 + ... + 41423.

Almost surely, 2^142001456 is an apocalyptic number.

142001456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

142001456 is a deficient number, since it is larger than the sum of its proper divisors (133314256).

142001456 is a wasteful number, since it uses less digits than its factorization.

142001456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6068 (or 6062 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 142001456 is about 11916.4363800593. The cubic root of 142001456 is about 521.7121277442.

Adding to 142001456 its reverse (654100241), we get a palindrome (796101697).

The spelling of 142001456 in words is "one hundred forty-two million, one thousand, four hundred fifty-six".