420245506654 has 4 divisors (see below), whose sum is σ = 630368259984. Its totient is φ = 210122753326.

The previous prime is 420245506627. The next prime is 420245506663. The reversal of 420245506654 is 456605542024.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a super-3 number, since 3×420245506654³ (a number of 36 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 420245506654.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105061376662 + ... + 105061376665.

It is an arithmetic number, because the mean of its divisors is an integer number (157592064996).

Almost surely, 2^420245506654 is an apocalyptic number.

420245506654 is a deficient number, since it is larger than the sum of its proper divisors (210122753330).

420245506654 is a wasteful number, since it uses less digits than its factorization.

420245506654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210122753329.

The product of its (nonzero) digits is 1152000, while the sum is 43.

The spelling of 420245506654 in words is "four hundred twenty billion, two hundred forty-five million, five hundred six thousand, six hundred fifty-four".