142403122100440 has 32 divisors (see below), whose sum is σ = 320407700888880. Its totient is φ = 56961128633472.

The previous prime is 142403122100359. The next prime is 142403122100441. The reversal of 142403122100440 is 44001221304241.

It is a junction number, because it is equal to n+sod(n) for n = 142403122100399 and 142403122100408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142403122100441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16827382 + ... + 23832058.

Almost surely, 2^{142403122100440} is an apocalyptic number.

142403122100440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142403122100440 is an abundant number, since it is smaller than the sum of its proper divisors (178004578788440).

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

142403122100440 is a wasteful number, since it uses less digits than its factorization.

142403122100440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7512931 (or 7512927 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 142403122100440 its reverse (44001221304241), we get a palindrome (186404343404681).

The spelling of 142403122100440 in words is "one hundred forty-two trillion, four hundred three billion, one hundred twenty-two million, one hundred thousand, four hundred forty".