142341440 has 28 divisors (see below), whose sum is σ = 338951316. Its totient is φ = 56936448.

The previous prime is 142341401. The next prime is 142341443. The reversal of 142341440 is 44143241.

It is a happy number.

142341440 is digitally balanced in base 2, because in such base 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 70023424 + 72318016 = 8368^2 + 8504^2 .

It is a super-2 number, since 2×142341440² = 40522171082547200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142341443) 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, 222089 + ... + 222728.

Almost surely, 2^142341440 is an apocalyptic number.

142341440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142341440 is an abundant number, since it is smaller than the sum of its proper divisors (196609876).

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

142341440 is an equidigital number, since it uses as much as digits as its factorization.

142341440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444834 (or 444824 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 142341440 is about 11930.6931902551. The cubic root of 142341440 is about 522.1281619906.

Adding to 142341440 its reverse (44143241), we get a palindrome (186484681).

The spelling of 142341440 in words is "one hundred forty-two million, three hundred forty-one thousand, four hundred forty".