142280040 has 128 divisors (see below), whose sum is σ = 492687360. Its totient is φ = 32196864.

The previous prime is 142280029. The next prime is 142280053. The reversal of 142280040 is 40082241.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 142279989 and 142280016.

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, 89089 + ... + 90671.

It is an arithmetic number, because the mean of its divisors is an integer number (3849120).

Almost surely, 2^142280040 is an apocalyptic number.

142280040 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 142280040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (246343680).

142280040 is an abundant number, since it is smaller than the sum of its proper divisors (350407320).

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

142280040 is a wasteful number, since it uses less digits than its factorization.

142280040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1711 (or 1707 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 142280040 is about 11928.1197177091. The cubic root of 142280040 is about 522.0530766188.

The spelling of 142280040 in words is "one hundred forty-two million, two hundred eighty thousand, forty".