142439352 has 128 divisors (see below), whose sum is σ = 415584000. Its totient is φ = 40227840.

The previous prime is 142439351. The next prime is 142439411. The reversal of 142439352 is 253934241.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142439351) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 365974 + ... + 366362.

It is an arithmetic number, because the mean of its divisors is an integer number (3246750).

Almost surely, 2^142439352 is an apocalyptic number.

142439352 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 142439352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (207792000).

142439352 is an abundant number, since it is smaller than the sum of its proper divisors (273144648).

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

142439352 is a wasteful number, since it uses less digits than its factorization.

142439352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501 (or 497 counting only the distinct ones).

The product of its digits is 25920, while the sum is 33.

The square root of 142439352 is about 11934.7958507886. The cubic root of 142439352 is about 522.2478528205.

The spelling of 142439352 in words is "one hundred forty-two million, four hundred thirty-nine thousand, three hundred fifty-two".