3642201021 has 8 divisors (see below), whose sum is σ = 4856866560. Its totient is φ = 2427834752.

The previous prime is 3642200987. The next prime is 3642201037. The reversal of 3642201021 is 1201022463.

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

It is a cyclic number.

It is not a de Polignac number, because 3642201021 - 2⁶ = 3642200957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3642201821) 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, 44685 + ... + 96338.

It is an arithmetic number, because the mean of its divisors is an integer number (607108320).

Almost surely, 2^3642201021 is an apocalyptic number.

It is an amenable number.

3642201021 is a deficient number, since it is larger than the sum of its proper divisors (1214665539).

3642201021 is a wasteful number, since it uses less digits than its factorization.

3642201021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149635.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 3642201021 is about 60350.6505433040. The cubic root of 3642201021 is about 1538.5843262983.

Adding to 3642201021 its reverse (1201022463), we get a palindrome (4843223484).

The spelling of 3642201021 in words is "three billion, six hundred forty-two million, two hundred one thousand, twenty-one".