142281990 has 24 divisors (see below), whose sum is σ = 369933408. Its totient is φ = 37941840.

The previous prime is 142281989. The next prime is 142281991. The reversal of 142281990 is 99182241.

It is an interprime number because it is at equal distance from previous prime (142281989) and next prime (142281991).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142281991) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 790366 + ... + 790545.

It is an arithmetic number, because the mean of its divisors is an integer number (15413892).

Almost surely, 2^142281990 is an apocalyptic number.

142281990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

142281990 is an abundant number, since it is smaller than the sum of its proper divisors (227651418).

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

142281990 is a wasteful number, since it uses less digits than its factorization.

142281990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1580924 (or 1580921 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 142281990 is about 11928.2014570513. The cubic root of 142281990 is about 522.0554615841.

The spelling of 142281990 in words is "one hundred forty-two million, two hundred eighty-one thousand, nine hundred ninety".