40162321 has 2 divisors, whose sum is σ = 40162322. Its totient is φ = 40162320.

The previous prime is 40162319. The next prime is 40162399. The reversal of 40162321 is 12326104.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22848400 + 17313921 = 4780^2 + 4161^2 .

It is a cyclic number.

It is not a de Polignac number, because 40162321 - 2¹ = 40162319 is a prime.

It is a super-2 number, since 2×40162321² = 3226024056214082, which contains 22 as substring.

Together with 40162319, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (40162021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20081160 + 20081161.

It is an arithmetic number, because the mean of its divisors is an integer number (20081161).

Almost surely, 2^40162321 is an apocalyptic number.

It is an amenable number.

40162321 is a deficient number, since it is larger than the sum of its proper divisors (1).

40162321 is an equidigital number, since it uses as much as digits as its factorization.

40162321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 40162321 is about 6337.3749297323. The cubic root of 40162321 is about 342.4571733263.

Adding to 40162321 its reverse (12326104), we get a palindrome (52488425).

The spelling of 40162321 in words is "forty million, one hundred sixty-two thousand, three hundred twenty-one".