142889004 has 36 divisors (see below), whose sum is σ = 363295296. Its totient is φ = 47352288.

The previous prime is 142888969. The next prime is 142889017. The reversal of 142889004 is 400988241.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×142889004² = 40834534928224032, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 142889004.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5244 + ... + 17699.

It is an arithmetic number, because the mean of its divisors is an integer number (10091536).

Almost surely, 2^142889004 is an apocalyptic number.

It is an amenable number.

142889004 is an abundant number, since it is smaller than the sum of its proper divisors (220406292).

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

142889004 is a wasteful number, since it uses less digits than its factorization.

142889004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23126 (or 23121 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 142889004 is about 11953.6188662681. The cubic root of 142889004 is about 522.7968189065.

The spelling of 142889004 in words is "one hundred forty-two million, eight hundred eighty-nine thousand, four".