751113421 has 8 divisors (see below), whose sum is σ = 755910144. Its totient is φ = 746326080.

The previous prime is 751113383. The next prime is 751113437. The reversal of 751113421 is 124311157.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-751113421 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 (752113421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 225061 + ... + 228373.

It is an arithmetic number, because the mean of its divisors is an integer number (94488768).

Almost surely, 2^751113421 is an apocalyptic number.

It is an amenable number.

751113421 is a deficient number, since it is larger than the sum of its proper divisors (4796723).

751113421 is a wasteful number, since it uses less digits than its factorization.

751113421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4691.

The product of its digits is 840, while the sum is 25.

The square root of 751113421 is about 27406.4485294976. The cubic root of 751113421 is about 909.0096786059.

Adding to 751113421 its reverse (124311157), we get a palindrome (875424578).

The spelling of 751113421 in words is "seven hundred fifty-one million, one hundred thirteen thousand, four hundred twenty-one".