121243434 has 32 divisors (see below), whose sum is σ = 264829824. Its totient is φ = 36778560.

The previous prime is 121243399. The next prime is 121243457. The reversal of 121243434 is 434342121.

It is a super-2 number, since 2×121243434² = 29399940576224712, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5409 + ... + 16484.

It is an arithmetic number, because the mean of its divisors is an integer number (8275932).

Almost surely, 2^121243434 is an apocalyptic number.

121243434 is an abundant number, since it is smaller than the sum of its proper divisors (143586390).

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

121243434 is a wasteful number, since it uses less digits than its factorization.

121243434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21982.

The product of its digits is 2304, while the sum is 24.

The square root of 121243434 is about 11011.0596220346. The cubic root of 121243434 is about 494.9402152059.

Adding to 121243434 its reverse (434342121), we get a palindrome (555585555).

The spelling of 121243434 in words is "one hundred twenty-one million, two hundred forty-three thousand, four hundred thirty-four".