142217945190 has 96 divisors (see below), whose sum is σ = 394560298080. Its totient is φ = 35436538368.

The previous prime is 142217945189. The next prime is 142217945197. The reversal of 142217945190 is 91549712241.

142217945190 is a `hidden beast` number, since 1 + 4 + 22 + 179 + 451 + 9 + 0 = 666.

142217945190 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×142217945190² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142217945197) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 444817 + ... + 694476.

It is an arithmetic number, because the mean of its divisors is an integer number (4110003105).

Almost surely, 2^142217945190 is an apocalyptic number.

142217945190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

142217945190 is an abundant number, since it is smaller than the sum of its proper divisors (252342352890).

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

142217945190 is a wasteful number, since it uses less digits than its factorization.

142217945190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1139398 (or 1139395 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 45.

The spelling of 142217945190 in words is "one hundred forty-two billion, two hundred seventeen million, nine hundred forty-five thousand, one hundred ninety".