121443432 has 32 divisors (see below), whose sum is σ = 331210080. Its totient is φ = 36800960.

The previous prime is 121443431. The next prime is 121443433. The reversal of 121443432 is 234344121.

It is an interprime number because it is at equal distance from previous prime (121443431) and next prime (121443433).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (121443431) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 229743 + ... + 230270.

It is an arithmetic number, because the mean of its divisors is an integer number (10350315).

Almost surely, 2^121443432 is an apocalyptic number.

121443432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121443432 is an abundant number, since it is smaller than the sum of its proper divisors (209766648).

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

121443432 is a wasteful number, since it uses less digits than its factorization.

121443432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460033 (or 460029 counting only the distinct ones).

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

The square root of 121443432 is about 11020.1375671994. The cubic root of 121443432 is about 495.2122097969.

Adding to 121443432 its reverse (234344121), we get a palindrome (355787553).

It can be divided in two parts, 12144 and 3432, that added together give a triangular number (15576 = T₁₇₆).

The spelling of 121443432 in words is "one hundred twenty-one million, four hundred forty-three thousand, four hundred thirty-two".