421120545 has 16 divisors (see below), whose sum is σ = 674436672. Its totient is φ = 224383040.

The previous prime is 421120489. The next prime is 421120589. The reversal of 421120545 is 545021124.

It is not a de Polignac number, because 421120545 - 2⁸ = 421120289 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3499 + ... + 29231.

It is an arithmetic number, because the mean of its divisors is an integer number (42152292).

Almost surely, 2^421120545 is an apocalyptic number.

It is an amenable number.

421120545 is a deficient number, since it is larger than the sum of its proper divisors (253316127).

421120545 is a wasteful number, since it uses less digits than its factorization.

421120545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26832.

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 421120545 is about 20521.2218203498. The cubic root of 421120545 is about 749.5526487778.

Adding to 421120545 its reverse (545021124), we get a palindrome (966141669).

The spelling of 421120545 in words is "four hundred twenty-one million, one hundred twenty thousand, five hundred forty-five".