142563421 has 16 divisors (see below), whose sum is σ = 191415168. Its totient is φ = 102542400.

The previous prime is 142563413. The next prime is 142563439. The reversal of 142563421 is 124365241.

It is a cyclic number.

It is not a de Polignac number, because 142563421 - 2³ = 142563413 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 142563421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142563121) 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, 70210 + ... + 72211.

It is an arithmetic number, because the mean of its divisors is an integer number (11963448).

Almost surely, 2^142563421 is an apocalyptic number.

142563421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

142563421 is a deficient number, since it is larger than the sum of its proper divisors (48851747).

142563421 is a wasteful number, since it uses less digits than its factorization.

142563421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142452.

The product of its digits is 5760, while the sum is 28.

The square root of 142563421 is about 11939.9925041853. The cubic root of 142563421 is about 522.3994400616.

It can be divided in two parts, 1425 and 63421, that added together give a palindrome (64846).

The spelling of 142563421 in words is "one hundred forty-two million, five hundred sixty-three thousand, four hundred twenty-one".