16442407 has 2 divisors, whose sum is σ = 16442408. Its totient is φ = 16442406.

The previous prime is 16442399. The next prime is 16442423. The reversal of 16442407 is 70424461.

It is a weak prime.

It is an emirp because it is prime and its reverse (70424461) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16442407 - 2³ = 16442399 is a prime.

It is a super-3 number, since 3×16442407³ (a number of 23 digits) contains 333 as substring.

It is equal to p_1057717 and since 16442407 and 1057717 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16442807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8221203 + 8221204.

It is an arithmetic number, because the mean of its divisors is an integer number (8221204).

Almost surely, 2^16442407 is an apocalyptic number.

16442407 is a deficient number, since it is larger than the sum of its proper divisors (1).

16442407 is an equidigital number, since it uses as much as digits as its factorization.

16442407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 16442407 is about 4054.9237970645. The cubic root of 16442407 is about 254.2856181128.

Adding to 16442407 its reverse (70424461), we get a palindrome (86866868).

The spelling of 16442407 in words is "sixteen million, four hundred forty-two thousand, four hundred seven".