120621043 has 2 divisors, whose sum is σ = 120621044. Its totient is φ = 120621042.

The previous prime is 120621029. The next prime is 120621047. The reversal of 120621043 is 340126021.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120621043 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 120621043.

It is not a weakly prime, because it can be changed into another prime (120621047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60310521 + 60310522.

It is an arithmetic number, because the mean of its divisors is an integer number (60310522).

Almost surely, 2^120621043 is an apocalyptic number.

120621043 is a deficient number, since it is larger than the sum of its proper divisors (1).

120621043 is an equidigital number, since it uses as much as digits as its factorization.

120621043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 120621043 is about 10982.7611737668. The cubic root of 120621043 is about 494.0918532451.

Adding to 120621043 its reverse (340126021), we get a palindrome (460747064).

The spelling of 120621043 in words is "one hundred twenty million, six hundred twenty-one thousand, forty-three".