3652042421 has 12 divisors (see below), whose sum is σ = 3857218092. Its totient is φ = 3457275264.

The previous prime is 3652042393. The next prime is 3652042441. The reversal of 3652042421 is 1242402563.

It can be written as a sum of positive squares in 2 ways, for example, as 1080436900 + 2571605521 = 32870^2 + 50711^2 .

It is a de Polignac number, because none of the positive numbers 2^k-3652042421 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 (3652042441) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 638651 + ... + 644343.

It is an arithmetic number, because the mean of its divisors is an integer number (321434841).

Almost surely, 2^3652042421 is an apocalyptic number.

It is an amenable number.

3652042421 is a deficient number, since it is larger than the sum of its proper divisors (205175671).

3652042421 is a wasteful number, since it uses less digits than its factorization.

3652042421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7508 (or 7489 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 3652042421 is about 60432.1307004808. The cubic root of 3652042421 is about 1539.9688559789.

Adding to 3652042421 its reverse (1242402563), we get a palindrome (4894444984).

The spelling of 3652042421 in words is "three billion, six hundred fifty-two million, forty-two thousand, four hundred twenty-one".