142604640 has 144 divisors (see below), whose sum is σ = 490377888. Its totient is φ = 37736448.

The previous prime is 142604603. The next prime is 142604659. The reversal of 142604640 is 46406241.

142604640 is a `hidden beast` number, since 14 + 2 + 6 + 0 + 4 + 640 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 240184 + ... + 240776.

It is an arithmetic number, because the mean of its divisors is an integer number (3405402).

Almost surely, 2^142604640 is an apocalyptic number.

142604640 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 142604640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (245188944).

142604640 is an abundant number, since it is smaller than the sum of its proper divisors (347773248).

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

142604640 is a wasteful number, since it uses less digits than its factorization.

142604640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 781 (or 770 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 142604640 is about 11941.7184692991. The cubic root of 142604640 is about 522.4497818849.

The spelling of 142604640 in words is "one hundred forty-two million, six hundred four thousand, six hundred forty".