72404141 has 2 divisors, whose sum is σ = 72404142. Its totient is φ = 72404140.

The previous prime is 72404107. The next prime is 72404177. The reversal of 72404141 is 14140427.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48246916 + 24157225 = 6946^2 + 4915^2 .

It is a cyclic number.

It is not a de Polignac number, because 72404141 - 2¹⁸ = 72141997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72404341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36202070 + 36202071.

It is an arithmetic number, because the mean of its divisors is an integer number (36202071).

Almost surely, 2^72404141 is an apocalyptic number.

It is an amenable number.

72404141 is a deficient number, since it is larger than the sum of its proper divisors (1).

72404141 is an equidigital number, since it uses as much as digits as its factorization.

72404141 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 72404141 is about 8509.0622867623. The cubic root of 72404141 is about 416.7936897702.

Adding to 72404141 its reverse (14140427), we get a palindrome (86544568).

The spelling of 72404141 in words is "seventy-two million, four hundred four thousand, one hundred forty-one".