142054440 has 128 divisors (see below), whose sum is σ = 485222400. Its totient is φ = 32933120.

The previous prime is 142054427. The next prime is 142054459. The reversal of 142054440 is 44450241.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 142054440.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28021 + ... + 32699.

It is an arithmetic number, because the mean of its divisors is an integer number (3790800).

Almost surely, 2^142054440 is an apocalyptic number.

142054440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142054440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (242611200).

142054440 is an abundant number, since it is smaller than the sum of its proper divisors (343167960).

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

142054440 is a wasteful number, since it uses less digits than its factorization.

142054440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4727 (or 4723 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 24.

The square root of 142054440 is about 11918.6593205780. The cubic root of 142054440 is about 521.7770072623. Note that the first 3 decimals are identical.

The spelling of 142054440 in words is "one hundred forty-two million, fifty-four thousand, four hundred forty".