72141913 has 2 divisors, whose sum is σ = 72141914. Its totient is φ = 72141912.

The previous prime is 72141889. The next prime is 72141941. The reversal of 72141913 is 31914127.

It is an a-pointer prime, because the next prime (72141941) can be obtained adding 72141913 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63568729 + 8573184 = 7973^2 + 2928^2 .

It is a cyclic number.

It is not a de Polignac number, because 72141913 - 2²¹ = 70044761 is a prime.

It is a super-2 number, since 2×72141913² = 10408911222599138, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (72141943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36070956 + 36070957.

It is an arithmetic number, because the mean of its divisors is an integer number (36070957).

Almost surely, 2^72141913 is an apocalyptic number.

It is an amenable number.

72141913 is a deficient number, since it is larger than the sum of its proper divisors (1).

72141913 is an equidigital number, since it uses as much as digits as its factorization.

72141913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1512, while the sum is 28.

The square root of 72141913 is about 8493.6395614601. The cubic root of 72141913 is about 416.2899101714.

The spelling of 72141913 in words is "seventy-two million, one hundred forty-one thousand, nine hundred thirteen".