142563420 has 144 divisors (see below), whose sum is σ = 462309120. Its totient is φ = 35481600.

The previous prime is 142563413. The next prime is 142563439. The reversal of 142563420 is 24365241.

142563420 is a `hidden beast` number, since 1 + 4 + 2 + 5 + 634 + 20 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 161380 + ... + 162260.

It is an arithmetic number, because the mean of its divisors is an integer number (3210480).

Almost surely, 2^142563420 is an apocalyptic number.

142563420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142563420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (231154560).

142563420 is an abundant number, since it is smaller than the sum of its proper divisors (319745700).

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

142563420 is a wasteful number, since it uses less digits than its factorization.

142563420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 956 (or 951 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 142563420 is about 11939.9924623092. The cubic root of 142563420 is about 522.3994388402.

The spelling of 142563420 in words is "one hundred forty-two million, five hundred sixty-three thousand, four hundred twenty".