142003992 has 128 divisors (see below), whose sum is σ = 415316160. Its totient is φ = 40058880.

The previous prime is 142003991. The next prime is 142003993. The reversal of 142003992 is 299300241.

142003992 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (142003991) and next prime (142003993).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142003991) 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, 217138 + ... + 217790.

Almost surely, 2^142003992 is an apocalyptic number.

142003992 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 142003992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (207658080).

142003992 is an abundant number, since it is smaller than the sum of its proper divisors (273312168).

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

142003992 is a wasteful number, since it uses less digits than its factorization.

142003992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 733 (or 729 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 142003992 is about 11916.5427872349. The cubic root of 142003992 is about 521.7152334731.

The spelling of 142003992 in words is "one hundred forty-two million, three thousand, nine hundred ninety-two".