421122439 has 12 divisors (see below), whose sum is σ = 433437880. Its totient is φ = 409147200.

The previous prime is 421122431. The next prime is 421122497. The reversal of 421122439 is 934221124.

It is not a de Polignac number, because 421122439 - 2³ = 421122431 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421122431) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 636769 + ... + 637429.

Almost surely, 2^421122439 is an apocalyptic number.

421122439 is a deficient number, since it is larger than the sum of its proper divisors (12315441).

421122439 is an equidigital number, since it uses as much as digits as its factorization.

421122439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1122 (or 1081 counting only the distinct ones).

The product of its digits is 3456, while the sum is 28.

The square root of 421122439 is about 20521.2679676476. The cubic root of 421122439 is about 749.5537724866.

It can be divided in two parts, 42112 and 2439, that added together give a triangular number (44551 = T₂₉₈).

The spelling of 421122439 in words is "four hundred twenty-one million, one hundred twenty-two thousand, four hundred thirty-nine".