421078369949 has 16 divisors (see below), whose sum is σ = 446775436800. Its totient is φ = 395739264816.

The previous prime is 421078369937. The next prime is 421078369967. The reversal of 421078369949 is 949963870124.

It is a cyclic number.

It is not a de Polignac number, because 421078369949 - 2¹² = 421078365853 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 421078369891 and 421078369900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421078369919) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3380042 + ... + 3502404.

It is an arithmetic number, because the mean of its divisors is an integer number (27923464800).

Almost surely, 2^421078369949 is an apocalyptic number.

It is an amenable number.

421078369949 is a deficient number, since it is larger than the sum of its proper divisors (25697066851).

421078369949 is a wasteful number, since it uses less digits than its factorization.

421078369949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123824.

The product of its (nonzero) digits is 23514624, while the sum is 62.

The spelling of 421078369949 in words is "four hundred twenty-one billion, seventy-eight million, three hundred sixty-nine thousand, nine hundred forty-nine".