142964640 has 288 divisors, whose sum is σ = 601001856. Its totient is φ = 30136320.

The previous prime is 142964621. The next prime is 142964659. The reversal of 142964640 is 46469241.

142964640 is a `hidden beast` number, since 1 + 4 + 2 + 9 + 6 + 4 + 640 = 666.

It is an interprime number because it is at equal distance from previous prime (142964621) and next prime (142964659).

It is a tau number, because it is divible by the number of its divisors (288).

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 = 142964595 and 142964604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 130495 + ... + 131585.

It is an arithmetic number, because the mean of its divisors is an integer number (2086812).

Almost surely, 2^142964640 is an apocalyptic number.

142964640 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 142964640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (300500928).

142964640 is an abundant number, since it is smaller than the sum of its proper divisors (458037216).

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

142964640 is a wasteful number, since it uses less digits than its factorization.

142964640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1132 (or 1121 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 142964640 is about 11956.7821758197. The cubic root of 142964640 is about 522.8890473359.

The spelling of 142964640 in words is "one hundred forty-two million, nine hundred sixty-four thousand, six hundred forty".