63142740 has 60 divisors (see below), whose sum is σ = 198086196. Its totient is φ = 16837632.

The previous prime is 63142727. The next prime is 63142763. The reversal of 63142740 is 4724136.

63142740 is a `hidden beast` number, since 631 + 4 + 27 + 4 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 11819844 + 51322896 = 3438^2 + 7164^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a super-2 number, since 2×63142740² = 7974011229415200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 17869 + ... + 21108.

Almost surely, 2^63142740 is an apocalyptic number.

63142740 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

63142740 is an abundant number, since it is smaller than the sum of its proper divisors (134943456).

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

63142740 is a wasteful number, since it uses less digits than its factorization.

63142740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38998 (or 38987 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 63142740 is about 7946.2406205702. The cubic root of 63142740 is about 398.2060076743.

Adding to 63142740 its reverse (4724136), we get a palindrome (67866876).

The spelling of 63142740 in words is "sixty-three million, one hundred forty-two thousand, seven hundred forty".