142188415390 has 64 divisors (see below), whose sum is σ = 308237322240. Its totient is φ = 46133418240.

The previous prime is 142188415357. The next prime is 142188415399. The reversal of 142188415390 is 93514881241.

It is a super-2 number, since 2×142188415390² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 142188415390.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142188415399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1152954 + ... + 1270306.

It is an arithmetic number, because the mean of its divisors is an integer number (4816208160).

Almost surely, 2^142188415390 is an apocalyptic number.

142188415390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

142188415390 is an abundant number, since it is smaller than the sum of its proper divisors (166048906850).

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

142188415390 is a wasteful number, since it uses less digits than its factorization.

142188415390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118297.

The product of its (nonzero) digits is 276480, while the sum is 46.

The spelling of 142188415390 in words is "one hundred forty-two billion, one hundred eighty-eight million, four hundred fifteen thousand, three hundred ninety".