63042381 has 10 divisors (see below), whose sum is σ = 94174542. Its totient is φ = 42028200.

The previous prime is 63042373. The next prime is 63042383. The reversal of 63042381 is 18324036.

It is a happy number.

63042381 is a `hidden beast` number, since 630 + 4 + 23 + 8 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 55800900 + 7241481 = 7470^2 + 2691^2 .

It is not a de Polignac number, because 63042381 - 2³ = 63042373 is a prime.

It is a super-2 number, since 2×63042381² = 7948683604298322, 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 not an unprimeable number, because it can be changed into a prime (63042383) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 389070 + ... + 389231.

Almost surely, 2^63042381 is an apocalyptic number.

It is an amenable number.

63042381 is a deficient number, since it is larger than the sum of its proper divisors (31132161).

63042381 is an equidigital number, since it uses as much as digits as its factorization.

63042381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 778313 (or 778304 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 63042381 is about 7939.9232364047. The cubic root of 63042381 is about 397.9949264102.

The spelling of 63042381 in words is "sixty-three million, forty-two thousand, three hundred eighty-one".