142235988 has 24 divisors (see below), whose sum is σ = 332798592. Its totient is φ = 47281344.

The previous prime is 142235987. The next prime is 142235993. The reversal of 142235988 is 889532241.

It is a super-2 number, since 2×142235988² = 40462152564672288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142235987) 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 7 ways as a sum of consecutive naturals, for example, 11745 + ... + 20552.

It is an arithmetic number, because the mean of its divisors is an integer number (13866608).

Almost surely, 2^142235988 is an apocalyptic number.

It is an amenable number.

142235988 is an abundant number, since it is smaller than the sum of its proper divisors (190562604).

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

142235988 is a wasteful number, since it uses less digits than its factorization.

142235988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32671 (or 32669 counting only the distinct ones).

The product of its digits is 138240, while the sum is 42.

The square root of 142235988 is about 11926.2730138128. The cubic root of 142235988 is about 521.9991926119. Note that the first 3 decimals are identical.

The spelling of 142235988 in words is "one hundred forty-two million, two hundred thirty-five thousand, nine hundred eighty-eight".