142102120040 has 32 divisors (see below), whose sum is σ = 320451547680. Its totient is φ = 56712532032.

The previous prime is 142102120021. The next prime is 142102120051. The reversal of 142102120040 is 40021201241.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3991934 + ... + 4027373.

It is an arithmetic number, because the mean of its divisors is an integer number (10014110865).

Almost surely, 2^142102120040 is an apocalyptic number.

142102120040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142102120040 is an abundant number, since it is smaller than the sum of its proper divisors (178349427640).

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

142102120040 is a wasteful number, since it uses less digits than its factorization.

142102120040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8019761 (or 8019757 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 142102120040 its reverse (40021201241), we get a palindrome (182123321281).

The spelling of 142102120040 in words is "one hundred forty-two billion, one hundred two million, one hundred twenty thousand, forty".