423744742747 has 4 divisors (see below), whose sum is σ = 430691377936. Its totient is φ = 416798107560.

The previous prime is 423744742711. The next prime is 423744742913. The reversal of 423744742747 is 747247447324.

It is a happy number.

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-423744742747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (423744742147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3473317503 + ... + 3473317624.

It is an arithmetic number, because the mean of its divisors is an integer number (107672844484).

Almost surely, 2^423744742747 is an apocalyptic number.

423744742747 is a deficient number, since it is larger than the sum of its proper divisors (6946635189).

423744742747 is an equidigital number, since it uses as much as digits as its factorization.

423744742747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6946635188.

The product of its digits is 29503488, while the sum is 55.

The spelling of 423744742747 in words is "four hundred twenty-three billion, seven hundred forty-four million, seven hundred forty-two thousand, seven hundred forty-seven".