749021 has 8 divisors (see below), whose sum is σ = 921984. Its totient is φ = 592560.

The previous prime is 749011. The next prime is 749027. The reversal of 749021 is 120947.

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-749021 is a prime.

It is a super-2 number, since 2×749021² = 1122064916882, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (749027) 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, 4025 + ... + 4206.

It is an arithmetic number, because the mean of its divisors is an integer number (115248).

2⁷⁴⁹⁰²¹ is an apocalyptic number.

It is an amenable number.

749021 is a deficient number, since it is larger than the sum of its proper divisors (172963).

749021 is a wasteful number, since it uses less digits than its factorization.

749021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8251.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 749021 is about 865.4599932984. The cubic root of 749021 is about 90.8164799601.

Adding to 749021 its reverse (120947), we get a palindrome (869968).

The spelling of 749021 in words is "seven hundred forty-nine thousand, twenty-one".