142089192 has 48 divisors (see below), whose sum is σ = 439801440. Its totient is φ = 40596768.

The previous prime is 142089173. The next prime is 142089197. The reversal of 142089192 is 291980241.

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

It is not an unprimeable number, because it can be changed into a prime (142089197) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 140458 + ... + 141465.

It is an arithmetic number, because the mean of its divisors is an integer number (9162530).

Almost surely, 2^142089192 is an apocalyptic number.

142089192 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

142089192 is an abundant number, since it is smaller than the sum of its proper divisors (297712248).

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

142089192 is a wasteful number, since it uses less digits than its factorization.

142089192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281942 (or 281935 counting only the distinct ones).

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

The square root of 142089192 is about 11920.1171135186. The cubic root of 142089192 is about 521.8195527260.

Subtracting 142089192 from its reverse (291980241), we obtain a square (149891049 = 12243²).

The spelling of 142089192 in words is "one hundred forty-two million, eighty-nine thousand, one hundred ninety-two".