142611840 has 384 divisors, whose sum is σ = 588107520. Its totient is φ = 32348160.

The previous prime is 142611803. The next prime is 142611857. The reversal of 142611840 is 48116241.

It is a happy number.

142611840 is a `hidden beast` number, since 1 + 4 + 2 + 611 + 8 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (384).

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 1088575 + ... + 1088705.

It is an arithmetic number, because the mean of its divisors is an integer number (1531530).

Almost surely, 2^142611840 is an apocalyptic number.

142611840 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 142611840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (294053760).

142611840 is an abundant number, since it is smaller than the sum of its proper divisors (445495680).

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

142611840 is an equidigital number, since it uses as much as digits as its factorization.

142611840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172 (or 148 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 142611840 is about 11942.0199296434. The cubic root of 142611840 is about 522.4585744345.

The spelling of 142611840 in words is "one hundred forty-two million, six hundred eleven thousand, eight hundred forty".