142114640 has 20 divisors (see below), whose sum is σ = 330416724. Its totient is φ = 56845824.

The previous prime is 142114639. The next prime is 142114649. The reversal of 142114640 is 46411241.

It is a happy number.

142114640 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 109579024 + 32535616 = 10468^2 + 5704^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142114649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 888137 + ... + 888296.

Almost surely, 2^142114640 is an apocalyptic number.

142114640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142114640 is an abundant number, since it is smaller than the sum of its proper divisors (188302084).

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

142114640 is a wasteful number, since it uses less digits than its factorization.

142114640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1776446 (or 1776440 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 142114640 is about 11921.1845049055. The cubic root of 142114640 is about 521.8507032804.

Adding to 142114640 its reverse (46411241), we get a palindrome (188525881).

It can be divided in two parts, 1421 and 14640, that added together give a palindrome (16061).

The spelling of 142114640 in words is "one hundred forty-two million, one hundred fourteen thousand, six hundred forty".