7405421930 has 8 divisors (see below), whose sum is σ = 13329759492. Its totient is φ = 2962168768.

The previous prime is 7405421929. The next prime is 7405421977. The reversal of 7405421930 is 391245047.

It can be written as a sum of positive squares in 2 ways, for example, as 6007335049 + 1398086881 = 77507^2 + 37391^2 .

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

It is a super-2 number, since 2×7405421930² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 370271087 + ... + 370271106.

Almost surely, 2^7405421930 is an apocalyptic number.

7405421930 is a deficient number, since it is larger than the sum of its proper divisors (5924337562).

7405421930 is a wasteful number, since it uses less digits than its factorization.

7405421930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 740542200.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 7405421930 is about 86054.7612279530. The cubic root of 7405421930 is about 1949.1709761103.

Adding to 7405421930 its reverse (391245047), we get a palindrome (7796666977).

The spelling of 7405421930 in words is "seven billion, four hundred five million, four hundred twenty-one thousand, nine hundred thirty".