142487040 has 80 divisors (see below), whose sum is σ = 455537808. Its totient is φ = 37994496.

The previous prime is 142487039. The next prime is 142487071. The reversal of 142487040 is 40784241.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 142486989 and 142487007.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1597 + ... + 16956.

Almost surely, 2^142487040 is an apocalyptic number.

142487040 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 142487040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (227768904).

142487040 is an abundant number, since it is smaller than the sum of its proper divisors (313050768).

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

142487040 is an equidigital number, since it uses as much as digits as its factorization.

142487040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18579 (or 18563 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 30.

The square root of 142487040 is about 11936.7935393053. The cubic root of 142487040 is about 522.3061283284.

The spelling of 142487040 in words is "one hundred forty-two million, four hundred eighty-seven thousand, forty".