421272603 has 16 divisors (see below), whose sum is σ = 625150240. Its totient is φ = 280379232.

The previous prime is 421272569. The next prime is 421272619. The reversal of 421272603 is 306272124.

421272603 is a `hidden beast` number, since 42 + 12 + 7 + 2 + 603 = 666.

It is not a de Polignac number, because 421272603 - 2⁶ = 421272539 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421273603) 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 15 ways as a sum of consecutive naturals, for example, 3825 + ... + 29277.

It is an arithmetic number, because the mean of its divisors is an integer number (39071890).

Almost surely, 2^421272603 is an apocalyptic number.

421272603 is a deficient number, since it is larger than the sum of its proper divisors (203877637).

421272603 is a wasteful number, since it uses less digits than its factorization.

421272603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26075 (or 26069 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 421272603 is about 20524.9263823284. The cubic root of 421272603 is about 749.6428539559.

It can be divided in two parts, 421272 and 603, that added together give a cube (421875 = 75³).

The spelling of 421272603 in words is "four hundred twenty-one million, two hundred seventy-two thousand, six hundred three".