1220076403 has 24 divisors (see below), whose sum is σ = 1516135968. Its totient is φ = 961339392.

The previous prime is 1220076397. The next prime is 1220076409. The reversal of 1220076403 is 3046700221.

It is an interprime number because it is at equal distance from previous prime (1220076397) and next prime (1220076409).

It is not a de Polignac number, because 1220076403 - 2²⁹ = 683205491 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220076409) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 302025 + ... + 306037.

It is an arithmetic number, because the mean of its divisors is an integer number (63172332).

Almost surely, 2^1220076403 is an apocalyptic number.

1220076403 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1220076403 is a deficient number, since it is larger than the sum of its proper divisors (296059565).

1220076403 is a wasteful number, since it uses less digits than its factorization.

1220076403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4303 (or 4290 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 1220076403 is about 34929.5920817865. The cubic root of 1220076403 is about 1068.5520353873.

Adding to 1220076403 its reverse (3046700221), we get a palindrome (4266776624).

The spelling of 1220076403 in words is "one billion, two hundred twenty million, seventy-six thousand, four hundred three".