142209536 has 40 divisors (see below), whose sum is σ = 324741120. Its totient is φ = 60945408.

The previous prime is 142209497. The next prime is 142209563. The reversal of 142209536 is 635902241.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16256 + ... + 23423.

It is an arithmetic number, because the mean of its divisors is an integer number (8118528).

Almost surely, 2^142209536 is an apocalyptic number.

142209536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

142209536 is an abundant number, since it is smaller than the sum of its proper divisors (182531584).

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

142209536 is an frugal number, since it uses more digits than its factorization.

142209536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39704 (or 39688 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 142209536 is about 11925.1639821010. The cubic root of 142209536 is about 521.9668314191.

The spelling of 142209536 in words is "one hundred forty-two million, two hundred nine thousand, five hundred thirty-six".