142189190802 has 32 divisors (see below), whose sum is σ = 316044504000. Its totient is φ = 47386118304.

The previous prime is 142189190797. The next prime is 142189190807. The reversal of 142189190802 is 208091981241.

It is an interprime number because it is at equal distance from previous prime (142189190797) and next prime (142189190807).

It is a super-2 number, since 2×142189190802² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (142189190807) 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 15 ways as a sum of consecutive naturals, for example, 32148 + ... + 534239.

It is an arithmetic number, because the mean of its divisors is an integer number (9876390750).

Almost surely, 2^142189190802 is an apocalyptic number.

142189190802 is an abundant number, since it is smaller than the sum of its proper divisors (173855313198).

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

142189190802 is a wasteful number, since it uses less digits than its factorization.

142189190802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571047 (or 571041 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 45.

The spelling of 142189190802 in words is "one hundred forty-two billion, one hundred eighty-nine million, one hundred ninety thousand, eight hundred two".