142147340 has 24 divisors (see below), whose sum is σ = 306578832. Its totient is φ = 55321920.

The previous prime is 142147339. The next prime is 142147391. The reversal of 142147340 is 43741241.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95306 + ... + 96785.

It is an arithmetic number, because the mean of its divisors is an integer number (12774118).

Almost surely, 2^142147340 is an apocalyptic number.

142147340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142147340 is an abundant number, since it is smaller than the sum of its proper divisors (164431492).

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

142147340 is a wasteful number, since it uses less digits than its factorization.

142147340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192137 (or 192135 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 142147340 is about 11922.5559340269. Note that the first 3 decimals coincide. The cubic root of 142147340 is about 521.8907254515.

Adding to 142147340 its reverse (43741241), we get a palindrome (185888581).

The spelling of 142147340 in words is "one hundred forty-two million, one hundred forty-seven thousand, three hundred forty".