122421431 has 8 divisors (see below), whose sum is σ = 135160704. Its totient is φ = 109950520.

The previous prime is 122421421. The next prime is 122421443. The reversal of 122421431 is 134124221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 122421431 - 2¹⁸ = 122159287 is a prime.

It is a super-2 number, since 2×122421431² = 29974013536175522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122421421) 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, 66131 + ... + 67956.

It is an arithmetic number, because the mean of its divisors is an integer number (16895088).

Almost surely, 2^122421431 is an apocalyptic number.

122421431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

122421431 is a deficient number, since it is larger than the sum of its proper divisors (12739273).

122421431 is a wasteful number, since it uses less digits than its factorization.

122421431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134181.

The product of its digits is 384, while the sum is 20.

The square root of 122421431 is about 11064.4218556597. The cubic root of 122421431 is about 496.5379923310.

Adding to 122421431 its reverse (134124221), we get a palindrome (256545652).

The spelling of 122421431 in words is "one hundred twenty-two million, four hundred twenty-one thousand, four hundred thirty-one".