7420534257 has 8 divisors (see below), whose sum is σ = 10033398720. Its totient is φ = 4877346320.

The previous prime is 7420534211. The next prime is 7420534267. The reversal of 7420534257 is 7524350247.

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

It is a cyclic number.

It is not a de Polignac number, because 7420534257 - 2¹⁶ = 7420468721 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7420534267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17418882 + ... + 17419307.

It is an arithmetic number, because the mean of its divisors is an integer number (1254174840).

Almost surely, 2^7420534257 is an apocalyptic number.

It is an amenable number.

7420534257 is a deficient number, since it is larger than the sum of its proper divisors (2612864463).

7420534257 is a wasteful number, since it uses less digits than its factorization.

7420534257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34838263.

The product of its (nonzero) digits is 235200, while the sum is 39.

The square root of 7420534257 is about 86142.5229314768. The cubic root of 7420534257 is about 1950.4959735120.

The spelling of 7420534257 in words is "seven billion, four hundred twenty million, five hundred thirty-four thousand, two hundred fifty-seven".