7432420681 has 4 divisors (see below), whose sum is σ = 8494195072. Its totient is φ = 6370646292.

The previous prime is 7432420661. The next prime is 7432420729. The reversal of 7432420681 is 1860242347.

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.

It is a cyclic number.

It is not a de Polignac number, because 7432420681 - 2¹¹ = 7432418633 is a prime.

It is a super-2 number, since 2×7432420681² (a number of 21 digits) contains 22 as substring.

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 7432420681.

It is not an unprimeable number, because it can be changed into a prime (7432420601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 530887185 + ... + 530887198.

It is an arithmetic number, because the mean of its divisors is an integer number (2123548768).

Almost surely, 2^7432420681 is an apocalyptic number.

It is an amenable number.

7432420681 is a deficient number, since it is larger than the sum of its proper divisors (1061774391).

7432420681 is a wasteful number, since it uses less digits than its factorization.

7432420681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1061774390.

The product of its (nonzero) digits is 64512, while the sum is 37.

The square root of 7432420681 is about 86211.4881033845. The cubic root of 7432420681 is about 1951.5368713412.

The spelling of 7432420681 in words is "seven billion, four hundred thirty-two million, four hundred twenty thousand, six hundred eighty-one".