2120040403 has 16 divisors (see below), whose sum is σ = 2419502400. Its totient is φ = 1840260096.

The previous prime is 2120040397. The next prime is 2120040409. The reversal of 2120040403 is 3040400212.

It is an interprime number because it is at equal distance from previous prime (2120040397) and next prime (2120040409).

It is a cyclic number.

It is not a de Polignac number, because 2120040403 - 2²¹ = 2117943251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2120040409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 305751 + ... + 312607.

It is an arithmetic number, because the mean of its divisors is an integer number (151218900).

Almost surely, 2^2120040403 is an apocalyptic number.

2120040403 is a deficient number, since it is larger than the sum of its proper divisors (299461997).

2120040403 is a wasteful number, since it uses less digits than its factorization.

2120040403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8286.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 2120040403 is about 46043.8964793381. The cubic root of 2120040403 is about 1284.6398185054.

Adding to 2120040403 its reverse (3040400212), we get a palindrome (5160440615).

The spelling of 2120040403 in words is "two billion, one hundred twenty million, forty thousand, four hundred three".