120043421 has 2 divisors, whose sum is σ = 120043422. Its totient is φ = 120043420.

The previous prime is 120043411. The next prime is 120043433. The reversal of 120043421 is 124340021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 116337796 + 3705625 = 10786^2 + 1925^2 .

It is a cyclic number.

It is not a de Polignac number, because 120043421 - 2²² = 115849117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 120043421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120043411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60021710 + 60021711.

It is an arithmetic number, because the mean of its divisors is an integer number (60021711).

Almost surely, 2^120043421 is an apocalyptic number.

It is an amenable number.

120043421 is a deficient number, since it is larger than the sum of its proper divisors (1).

120043421 is an equidigital number, since it uses as much as digits as its factorization.

120043421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 120043421 is about 10956.4328592841. The cubic root of 120043421 is about 493.3018995778.

Adding to 120043421 its reverse (124340021), we get a palindrome (244383442).

The spelling of 120043421 in words is "one hundred twenty million, forty-three thousand, four hundred twenty-one".