420663542 has 8 divisors (see below), whose sum is σ = 679533456. Its totient is φ = 194152392.

The previous prime is 420663541. The next prime is 420663547. The reversal of 420663542 is 245366024.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 420663499 and 420663508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420663541) 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, 8089658 + ... + 8089709.

It is an arithmetic number, because the mean of its divisors is an integer number (84941682).

Almost surely, 2^420663542 is an apocalyptic number.

420663542 is a deficient number, since it is larger than the sum of its proper divisors (258869914).

420663542 is a wasteful number, since it uses less digits than its factorization.

420663542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16179382.

The product of its (nonzero) digits is 34560, while the sum is 32.

The square root of 420663542 is about 20510.0839101160. The cubic root of 420663542 is about 749.2814106887.

The spelling of 420663542 in words is "four hundred twenty million, six hundred sixty-three thousand, five hundred forty-two".