2045402421 has 8 divisors (see below), whose sum is σ = 2870740320. Its totient is φ = 1291833072.

The previous prime is 2045402389. The next prime is 2045402441. The reversal of 2045402421 is 1242045402.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2045402421 - 2⁵ = 2045402389 is a prime.

It is a super-2 number, since 2×2045402421² = 8367342127665322482, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2045402391 and 2045402400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2045402441) 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 7 ways as a sum of consecutive naturals, for example, 17942070 + ... + 17942183.

It is an arithmetic number, because the mean of its divisors is an integer number (358842540).

Almost surely, 2^2045402421 is an apocalyptic number.

It is an amenable number.

2045402421 is a deficient number, since it is larger than the sum of its proper divisors (825337899).

2045402421 is a wasteful number, since it uses less digits than its factorization.

2045402421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35884275.

The product of its (nonzero) digits is 2560, while the sum is 24.

The square root of 2045402421 is about 45226.1254254662. The cubic root of 2045402421 is about 1269.3837134274.

Adding to 2045402421 its reverse (1242045402), we get a palindrome (3287447823).

The spelling of 2045402421 in words is "two billion, forty-five million, four hundred two thousand, four hundred twenty-one".