142665240 has 128 divisors (see below), whose sum is σ = 444165120. Its totient is φ = 36633600.

The previous prime is 142665223. The next prime is 142665269. The reversal of 142665240 is 42566241.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 142665198 and 142665207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 526305 + ... + 526575.

It is an arithmetic number, because the mean of its divisors is an integer number (3470040).

Almost surely, 2^142665240 is an apocalyptic number.

142665240 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 142665240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (222082560).

142665240 is an abundant number, since it is smaller than the sum of its proper divisors (301499880).

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

142665240 is a wasteful number, since it uses less digits than its factorization.

142665240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433 (or 429 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 142665240 is about 11944.2555230537. The cubic root of 142665240 is about 522.5237766093.

It can be divided in two parts, 1426 and 65240, that added together give a palindrome (66666).

The spelling of 142665240 in words is "one hundred forty-two million, six hundred sixty-five thousand, two hundred forty".