142391952 has 80 divisors (see below), whose sum is σ = 417473280. Its totient is φ = 46447488.

The previous prime is 142391933. The next prime is 142391969. The reversal of 142391952 is 259193241.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16798 + ... + 23810.

It is an arithmetic number, because the mean of its divisors is an integer number (5218416).

Almost surely, 2^142391952 is an apocalyptic number.

142391952 is a gapful number since it is divisible by the number (12) 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 142391952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (208736640).

142391952 is an abundant number, since it is smaller than the sum of its proper divisors (275081328).

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

142391952 is a wasteful number, since it uses less digits than its factorization.

142391952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7077 (or 7065 counting only the distinct ones).

The product of its digits is 19440, while the sum is 36.

The square root of 142391952 is about 11932.8098954102. The cubic root of 142391952 is about 522.1899163624.

The spelling of 142391952 in words is "one hundred forty-two million, three hundred ninety-one thousand, nine hundred fifty-two".