142209873 has 24 divisors (see below), whose sum is σ = 221661440. Its totient is φ = 87337440.

The previous prime is 142209869. The next prime is 142209877. The reversal of 142209873 is 378902241.

It is an interprime number because it is at equal distance from previous prime (142209869) and next prime (142209877).

It is not a de Polignac number, because 142209873 - 2² = 142209869 is a prime.

It is a super-2 number, since 2×142209873² = 40447295957352258, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (142209877) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 79968 + ... + 81726.

Almost surely, 2^142209873 is an apocalyptic number.

142209873 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

142209873 is a deficient number, since it is larger than the sum of its proper divisors (79451567).

142209873 is a wasteful number, since it uses less digits than its factorization.

142209873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2469 (or 2466 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 142209873 is about 11925.1781118774. The cubic root of 142209873 is about 521.9672437278.

The spelling of 142209873 in words is "one hundred forty-two million, two hundred nine thousand, eight hundred seventy-three".