747268421 has 4 divisors (see below), whose sum is σ = 747648000. Its totient is φ = 746888844.

The previous prime is 747268411. The next prime is 747268429. The reversal of 747268421 is 124862747.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 124862747 = 2347 ⋅53201.

It is a cyclic number.

It is not a de Polignac number, because 747268421 - 2²² = 743074117 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 (747268429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 186821 + ... + 190778.

It is an arithmetic number, because the mean of its divisors is an integer number (186912000).

Almost surely, 2^747268421 is an apocalyptic number.

It is an amenable number.

747268421 is a deficient number, since it is larger than the sum of its proper divisors (379579).

747268421 is a wasteful number, since it uses less digits than its factorization.

747268421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379578.

The product of its digits is 150528, while the sum is 41.

The square root of 747268421 is about 27336.2108017918. The cubic root of 747268421 is about 907.4559304895.

The spelling of 747268421 in words is "seven hundred forty-seven million, two hundred sixty-eight thousand, four hundred twenty-one".