142464631540 has 240 divisors, whose sum is σ = 383192933760. Its totient is φ = 44119568640.

The previous prime is 142464631537. The next prime is 142464631577. The reversal of 142464631540 is 45136464241.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 142464631493 and 142464631502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 91381281 + ... + 91382839.

It is an arithmetic number, because the mean of its divisors is an integer number (1596637224).

Almost surely, 2^142464631540 is an apocalyptic number.

142464631540 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 142464631540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (191596466880).

142464631540 is an abundant number, since it is smaller than the sum of its proper divisors (240728302220).

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

142464631540 is a wasteful number, since it uses less digits than its factorization.

142464631540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1780 (or 1757 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 40.

The spelling of 142464631540 in words is "one hundred forty-two billion, four hundred sixty-four million, six hundred thirty-one thousand, five hundred forty".