72021341 has 16 divisors (see below), whose sum is σ = 84115584. Its totient is φ = 60393984.

The previous prime is 72021331. The next prime is 72021347. The reversal of 72021341 is 14312027.

It is a de Polignac number, because none of the positive numbers 2^k-72021341 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72021347) 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, 65105 + ... + 66201.

It is an arithmetic number, because the mean of its divisors is an integer number (5257224).

Almost surely, 2^72021341 is an apocalyptic number.

It is an amenable number.

72021341 is a deficient number, since it is larger than the sum of its proper divisors (12094243).

72021341 is a wasteful number, since it uses less digits than its factorization.

72021341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1300.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 72021341 is about 8486.5388115533. The cubic root of 72021341 is about 416.0578633916.

Adding to 72021341 its reverse (14312027), we get a palindrome (86333368).

The spelling of 72021341 in words is "seventy-two million, twenty-one thousand, three hundred forty-one".