747542423 has 4 divisors (see below), whose sum is σ = 747616968. Its totient is φ = 747467880.

The previous prime is 747542399. The next prime is 747542429. The reversal of 747542423 is 324245747.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 324245747 = 7 ⋅46320821.

It is a cyclic number.

It is not a de Polignac number, because 747542423 - 2⁶ = 747542359 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 (747542429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19361 + ... + 43242.

It is an arithmetic number, because the mean of its divisors is an integer number (186904242).

Almost surely, 2^747542423 is an apocalyptic number.

747542423 is a deficient number, since it is larger than the sum of its proper divisors (74545).

747542423 is a wasteful number, since it uses less digits than its factorization.

747542423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74544.

The product of its digits is 188160, while the sum is 38.

The square root of 747542423 is about 27341.2220465728. Note that the first 3 decimals coincide. The cubic root of 747542423 is about 907.5668296652.

It can be divided in two parts, 74754 and 2423, that added together give a palindrome (77177).

The spelling of 747542423 in words is "seven hundred forty-seven million, five hundred forty-two thousand, four hundred twenty-three".