42746399 has 4 divisors (see below), whose sum is σ = 42843336. Its totient is φ = 42649464.

The previous prime is 42746369. The next prime is 42746401. The reversal of 42746399 is 99364724.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42746399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42746309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47804 + ... + 48689.

It is an arithmetic number, because the mean of its divisors is an integer number (10710834).

Almost surely, 2^42746399 is an apocalyptic number.

42746399 is a deficient number, since it is larger than the sum of its proper divisors (96937).

42746399 is an equidigital number, since it uses as much as digits as its factorization.

42746399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96936.

The product of its digits is 326592, while the sum is 44.

The square root of 42746399 is about 6538.0730341592. The cubic root of 42746399 is about 349.6497148525.

The spelling of 42746399 in words is "forty-two million, seven hundred forty-six thousand, three hundred ninety-nine".