142557479 has 4 divisors (see below), whose sum is σ = 142593984. Its totient is φ = 142520976.

The previous prime is 142557449. The next prime is 142557487. The reversal of 142557479 is 974755241.

142557479 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 974755241 = 9463 ⋅103007.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142557479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142557409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11582 + ... + 20475.

It is an arithmetic number, because the mean of its divisors is an integer number (35648496).

Almost surely, 2^142557479 is an apocalyptic number.

142557479 is a deficient number, since it is larger than the sum of its proper divisors (36505).

142557479 is an equidigital number, since it uses as much as digits as its factorization.

142557479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36504.

The product of its digits is 352800, while the sum is 44.

The square root of 142557479 is about 11939.7436739655. The cubic root of 142557479 is about 522.3921821442.

The spelling of 142557479 in words is "one hundred forty-two million, five hundred fifty-seven thousand, four hundred seventy-nine".