421451045 has 32 divisors (see below), whose sum is σ = 534159360. Its totient is φ = 318827520.

The previous prime is 421451003. The next prime is 421451047. The reversal of 421451045 is 540154124.

It is not a de Polignac number, because 421451045 - 2¹⁰ = 421450021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421451047) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1889804 + ... + 1890026.

It is an arithmetic number, because the mean of its divisors is an integer number (16692480).

Almost surely, 2^421451045 is an apocalyptic number.

It is an amenable number.

421451045 is a deficient number, since it is larger than the sum of its proper divisors (112708315).

421451045 is a wasteful number, since it uses less digits than its factorization.

421451045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 485.

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 421451045 is about 20529.2728804505. The cubic root of 421451045 is about 749.7486832033.

The spelling of 421451045 in words is "four hundred twenty-one million, four hundred fifty-one thousand, forty-five".