1201421403 has 48 divisors (see below), whose sum is σ = 2215006976. Its totient is φ = 633705120.

The previous prime is 1201421393. The next prime is 1201421423. The reversal of 1201421403 is 3041241021.

1201421403 is a `hidden beast` number, since 1 + 201 + 421 + 40 + 3 = 666.

It is not a de Polignac number, because 1201421403 - 2¹⁶ = 1201355867 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1201421423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5053 + ... + 49278.

Almost surely, 2^1201421403 is an apocalyptic number.

1201421403 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1201421403 is a deficient number, since it is larger than the sum of its proper divisors (1013585573).

1201421403 is an equidigital number, since it uses as much as digits as its factorization.

1201421403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54366 (or 54354 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1201421403 is about 34661.5262647218. The cubic root of 1201421403 is about 1063.0779775400.

Adding to 1201421403 its reverse (3041241021), we get a palindrome (4242662424).

The spelling of 1201421403 in words is "one billion, two hundred one million, four hundred twenty-one thousand, four hundred three".