142445040 has 80 divisors (see below), whose sum is σ = 467568288. Its totient is φ = 35749888.

The previous prime is 142445027. The next prime is 142445059. The reversal of 142445040 is 40544241.

It is a happy number.

142445040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 142445040.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13377 + ... + 21536.

Almost surely, 2^142445040 is an apocalyptic number.

142445040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142445040 is an abundant number, since it is smaller than the sum of its proper divisors (325123248).

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

142445040 is a wasteful number, since it uses less digits than its factorization.

142445040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34946 (or 34940 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 24.

The square root of 142445040 is about 11935.0341432272. The cubic root of 142445040 is about 522.2548043317.

Adding to 142445040 its reverse (40544241), we get a palindrome (182989281).

It can be divided in two parts, 1424 and 45040, that added together give a palindrome (46464).

The spelling of 142445040 in words is "one hundred forty-two million, four hundred forty-five thousand, forty".