142578456 has 64 divisors (see below), whose sum is σ = 383875200. Its totient is φ = 43964928.

The previous prime is 142578433. The next prime is 142578481. The reversal of 142578456 is 654875241.

It is a happy number.

142578456 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×142578456² = 40657232230687872, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21111 + ... + 27033.

It is an arithmetic number, because the mean of its divisors is an integer number (5998050).

Almost surely, 2^142578456 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142578456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (191937600).

142578456 is an abundant number, since it is smaller than the sum of its proper divisors (241296744).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

142578456 is a wasteful number, since it uses less digits than its factorization.

142578456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6008 (or 6004 counting only the distinct ones).

The product of its digits is 268800, while the sum is 42.

The square root of 142578456 is about 11940.6220943467. The cubic root of 142578456 is about 522.4178038173.

The spelling of 142578456 in words is "one hundred forty-two million, five hundred seventy-eight thousand, four hundred fifty-six".