142742459 has 8 divisors (see below), whose sum is σ = 150612480. Its totient is φ = 134908200.

The previous prime is 142742449. The next prime is 142742503. The reversal of 142742459 is 954247241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 142742459 - 2⁸ = 142742203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142742419) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 527 + ... + 16904.

It is an arithmetic number, because the mean of its divisors is an integer number (18826560).

Almost surely, 2^142742459 is an apocalyptic number.

142742459 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

142742459 is a deficient number, since it is larger than the sum of its proper divisors (7870021).

142742459 is a wasteful number, since it uses less digits than its factorization.

142742459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17881.

The product of its digits is 80640, while the sum is 38.

The square root of 142742459 is about 11947.4875601526. The cubic root of 142742459 is about 522.6180333602.

The spelling of 142742459 in words is "one hundred forty-two million, seven hundred forty-two thousand, four hundred fifty-nine".