142873493 has 16 divisors (see below), whose sum is σ = 170885376. Its totient is φ = 116793600.

The previous prime is 142873487. The next prime is 142873499. The reversal of 142873493 is 394378241.

It is an interprime number because it is at equal distance from previous prime (142873487) and next prime (142873499).

It is not a de Polignac number, because 142873493 - 2⁶ = 142873429 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 142873493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142873499) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63455 + ... + 65667.

It is an arithmetic number, because the mean of its divisors is an integer number (10680336).

Almost surely, 2^142873493 is an apocalyptic number.

It is an amenable number.

142873493 is a deficient number, since it is larger than the sum of its proper divisors (28011883).

142873493 is a wasteful number, since it uses less digits than its factorization.

142873493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2644.

The product of its digits is 145152, while the sum is 41.

The square root of 142873493 is about 11952.9700493225. The cubic root of 142873493 is about 522.7779012043. Note that the first 3 decimals are identical.

The spelling of 142873493 in words is "one hundred forty-two million, eight hundred seventy-three thousand, four hundred ninety-three".