420334687898 has 4 divisors (see below), whose sum is σ = 630502031850. Its totient is φ = 210167343948.

The previous prime is 420334687889. The next prime is 420334687901. The reversal of 420334687898 is 898786433024.

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

It can be written as a sum of positive squares in only one way, i.e., 376869526609 + 43465161289 = 613897^2 + 208483^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 420334687898.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105083671973 + ... + 105083671976.

Almost surely, 2^420334687898 is an apocalyptic number.

420334687898 is a deficient number, since it is larger than the sum of its proper divisors (210167343952).

420334687898 is a wasteful number, since it uses less digits than its factorization.

420334687898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210167343951.

The product of its (nonzero) digits is 55738368, while the sum is 62.

The spelling of 420334687898 in words is "four hundred twenty billion, three hundred thirty-four million, six hundred eighty-seven thousand, eight hundred ninety-eight".