7420751 has 4 divisors (see below), whose sum is σ = 7991592. Its totient is φ = 6849912.

The previous prime is 7420741. The next prime is 7420753. The reversal of 7420751 is 1570247.

7420751 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 7420751 - 2¹⁸ = 7158607 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7420751.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7420753) 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, 285401 + ... + 285426.

It is an arithmetic number, because the mean of its divisors is an integer number (1997898).

Almost surely, 2^7420751 is an apocalyptic number.

7420751 is a deficient number, since it is larger than the sum of its proper divisors (570841).

7420751 is a wasteful number, since it uses less digits than its factorization.

7420751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570840.

The product of its (nonzero) digits is 1960, while the sum is 26.

The square root of 7420751 is about 2724.1055412741. The cubic root of 7420751 is about 195.0514963709.

Adding to 7420751 its reverse (1570247), we get a palindrome (8990998).

The spelling of 7420751 in words is "seven million, four hundred twenty thousand, seven hundred fifty-one".