421112709 has 8 divisors (see below), whose sum is σ = 623870720. Its totient is φ = 280741788.

The previous prime is 421112641. The next prime is 421112749. The reversal of 421112709 is 907211124.

It is not a de Polignac number, because 421112709 - 2¹⁶ = 421047173 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 15596767 = 421112709 / (4 + 2 + 1 + 1 + 1 + 2 + 7 + 0 + 9).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421112749) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7798357 + ... + 7798410.

It is an arithmetic number, because the mean of its divisors is an integer number (77983840).

Almost surely, 2^421112709 is an apocalyptic number.

It is an amenable number.

421112709 is a deficient number, since it is larger than the sum of its proper divisors (202758011).

421112709 is a wasteful number, since it uses less digits than its factorization.

421112709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15596776 (or 15596770 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 421112709 is about 20521.0308951573. The cubic root of 421112709 is about 749.5479996490.

It can be divided in two parts, 421112 and 709, that added together give a triangular number (421821 = T₉₁₈).

The spelling of 421112709 in words is "four hundred twenty-one million, one hundred twelve thousand, seven hundred nine".