40321421297 has 2 divisors, whose sum is σ = 40321421298. Its totient is φ = 40321421296.

The previous prime is 40321421269. The next prime is 40321421351. The reversal of 40321421297 is 79212412304.

40321421297 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33953221696 + 6368199601 = 184264^2 + 79801^2 .

It is a cyclic number.

It is not a de Polignac number, because 40321421297 - 2²² = 40317226993 is a prime.

It is not a weakly prime, because it can be changed into another prime (40321421207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20160710648 + 20160710649.

It is an arithmetic number, because the mean of its divisors is an integer number (20160710649).

Almost surely, 2^40321421297 is an apocalyptic number.

It is an amenable number.

40321421297 is a deficient number, since it is larger than the sum of its proper divisors (1).

40321421297 is an equidigital number, since it uses as much as digits as its factorization.

40321421297 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 35.

The spelling of 40321421297 in words is "forty billion, three hundred twenty-one million, four hundred twenty-one thousand, two hundred ninety-seven".