421066692 has 18 divisors (see below), whose sum is σ = 1064363118. Its totient is φ = 140355552.

The previous prime is 421066691. The next prime is 421066717. The reversal of 421066692 is 296660124.

It can be written as a sum of positive squares in only one way, i.e., 364275396 + 56791296 = 19086^2 + 7536^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-3 number, since 3×421066692³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 11696297 = 421066692 / (4 + 2 + 1 + 0 + 6 + 6 + 6 + 9 + 2).

It is not an unprimeable number, because it can be changed into a prime (421066691) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5848113 + ... + 5848184.

Almost surely, 2^421066692 is an apocalyptic number.

It is an amenable number.

421066692 is an abundant number, since it is smaller than the sum of its proper divisors (643296426).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

421066692 is a wasteful number, since it uses less digits than its factorization.

421066692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11696307 (or 11696302 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 421066692 is about 20519.9096489239. The cubic root of 421066692 is about 749.5206964227.

The spelling of 421066692 in words is "four hundred twenty-one million, sixty-six thousand, six hundred ninety-two".