122345421 has 32 divisors (see below), whose sum is σ = 184829568. Its totient is φ = 71331840.

The previous prime is 122345411. The next prime is 122345423. The reversal of 122345421 is 124543221.

It is not a de Polignac number, because 122345421 - 2¹⁵ = 122312653 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 122345391 and 122345400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122345423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 117921 + ... + 118953.

It is an arithmetic number, because the mean of its divisors is an integer number (5775924).

Almost surely, 2^122345421 is an apocalyptic number.

122345421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

122345421 is a deficient number, since it is larger than the sum of its proper divisors (62484147).

122345421 is a wasteful number, since it uses less digits than its factorization.

122345421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1181.

The product of its digits is 1920, while the sum is 24.

The square root of 122345421 is about 11060.9864388309. The cubic root of 122345421 is about 496.4352062247.

Adding to 122345421 its reverse (124543221), we get a palindrome (246888642).

It can be divided in two parts, 122 and 345421, that added together give a palindrome (345543).

The spelling of 122345421 in words is "one hundred twenty-two million, three hundred forty-five thousand, four hundred twenty-one".