142911240 has 128 divisors (see below), whose sum is σ = 453841920. Its totient is φ = 35942400.

The previous prime is 142911229. The next prime is 142911269. The reversal of 142911240 is 42119241.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 142911240.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 152052 + ... + 152988.

It is an arithmetic number, because the mean of its divisors is an integer number (3545640).

Almost surely, 2^142911240 is an apocalyptic number.

142911240 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 142911240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (226920960).

142911240 is an abundant number, since it is smaller than the sum of its proper divisors (310930680).

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

142911240 is a wasteful number, since it uses less digits than its factorization.

142911240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1023 (or 1019 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 142911240 is about 11954.5489249909. The cubic root of 142911240 is about 522.8239362419.

The spelling of 142911240 in words is "one hundred forty-two million, nine hundred eleven thousand, two hundred forty".