142464440 has 16 divisors (see below), whose sum is σ = 320545080. Its totient is φ = 56985760.

The previous prime is 142464419. The next prime is 142464449. The reversal of 142464440 is 44464241.

142464440 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×142464440² = 40592233329027200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142464449) 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, 1780766 + ... + 1780845.

Almost surely, 2^142464440 is an apocalyptic number.

142464440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142464440 is an abundant number, since it is smaller than the sum of its proper divisors (178080640).

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

142464440 is a wasteful number, since it uses less digits than its factorization.

142464440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3561622 (or 3561618 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 29.

The square root of 142464440 is about 11935.8468488834. The cubic root of 142464440 is about 522.2785123837.

The spelling of 142464440 in words is "one hundred forty-two million, four hundred sixty-four thousand, four hundred forty".