142142040 has 160 divisors (see below), whose sum is σ = 503118000. Its totient is φ = 35894016.

The previous prime is 142142029. The next prime is 142142089. The reversal of 142142040 is 40241241.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

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 39 ways as a sum of consecutive naturals, for example, 60406 + ... + 62714.

Almost surely, 2^142142040 is an apocalyptic number.

142142040 is a gapful number since it is divisible by the number (10) 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 142142040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (251559000).

142142040 is an abundant number, since it is smaller than the sum of its proper divisors (360975960).

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

142142040 is a wasteful number, since it uses less digits than its factorization.

142142040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2351 (or 2338 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 142142040 is about 11922.3336641783. Note that the first 3 decimals coincide. The cubic root of 142142040 is about 521.8842390944.

Adding to 142142040 its reverse (40241241), we get a palindrome (182383281).

The spelling of 142142040 in words is "one hundred forty-two million, one hundred forty-two thousand, forty".