142855493 has 4 divisors (see below), whose sum is σ = 155842368. Its totient is φ = 129868620.

The previous prime is 142855487. The next prime is 142855499. The reversal of 142855493 is 394558241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (142855487) and next prime (142855499).

It is a cyclic number.

It is not a de Polignac number, because 142855493 - 2⁴ = 142855477 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 142855493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142855499) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6493421 + ... + 6493442.

It is an arithmetic number, because the mean of its divisors is an integer number (38960592).

Almost surely, 2^142855493 is an apocalyptic number.

It is an amenable number.

142855493 is a deficient number, since it is larger than the sum of its proper divisors (12986875).

142855493 is a wasteful number, since it uses less digits than its factorization.

142855493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12986874.

The product of its digits is 172800, while the sum is 41.

The square root of 142855493 is about 11952.2170746686. The cubic root of 142855493 is about 522.7559461231.

The spelling of 142855493 in words is "one hundred forty-two million, eight hundred fifty-five thousand, four hundred ninety-three".