142404142440 has 64 divisors (see below), whose sum is σ = 488242776960. Its totient is φ = 32549518080.

The previous prime is 142404142423. The next prime is 142404142483. The reversal of 142404142440 is 44241404241.

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 = 142404142398 and 142404142407.

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, 84763531 + ... + 84765210.

It is an arithmetic number, because the mean of its divisors is an integer number (7628793390).

Almost surely, 2^142404142440 is an apocalyptic number.

142404142440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142404142440 is an abundant number, since it is smaller than the sum of its proper divisors (345838634520).

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

142404142440 is a wasteful number, since it uses less digits than its factorization.

142404142440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169528762 (or 169528758 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 30.

Adding to 142404142440 its reverse (44241404241), we get a palindrome (186645546681).

The spelling of 142404142440 in words is "one hundred forty-two billion, four hundred four million, one hundred forty-two thousand, four hundred forty".