142548840 has 144 divisors (see below), whose sum is σ = 538988580. Its totient is φ = 32578560.

The previous prime is 142548823. The next prime is 142548869. The reversal of 142548840 is 48845241.

It can be written as a sum of positive squares in 2 ways, for example, as 139287204 + 3261636 = 11802^2 + 1806^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 142548795 and 142548804.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 13600 + ... + 21680.

Almost surely, 2^142548840 is an apocalyptic number.

142548840 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 142548840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (269494290).

142548840 is an abundant number, since it is smaller than the sum of its proper divisors (396439740).

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

142548840 is a wasteful number, since it uses less digits than its factorization.

142548840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8112 (or 8098 counting only the distinct ones).

The product of its (nonzero) digits is 40960, while the sum is 36.

The square root of 142548840 is about 11939.3818935488. The cubic root of 142548840 is about 522.3816295885.

The spelling of 142548840 in words is "one hundred forty-two million, five hundred forty-eight thousand, eight hundred forty".