1401020403 has 4 divisors (see below), whose sum is σ = 1868027208. Its totient is φ = 934013600.

The previous prime is 1401020399. The next prime is 1401020441. The reversal of 1401020403 is 3040201041.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1401020403 - 2² = 1401020399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1401030403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 233503398 + ... + 233503403.

It is an arithmetic number, because the mean of its divisors is an integer number (467006802).

Almost surely, 2^1401020403 is an apocalyptic number.

1401020403 is a deficient number, since it is larger than the sum of its proper divisors (467006805).

1401020403 is an equidigital number, since it uses as much as digits as its factorization.

1401020403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467006804.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 1401020403 is about 37430.2070926678. The cubic root of 1401020403 is about 1118.9606650172.

Adding to 1401020403 its reverse (3040201041), we get a palindrome (4441221444).

The spelling of 1401020403 in words is "one billion, four hundred one million, twenty thousand, four hundred three".