7242121946 has 16 divisors (see below), whose sum is σ = 10899529128. Its totient is φ = 3608966400.

The previous prime is 7242121937. The next prime is 7242122003. The reversal of 7242121946 is 6491212427.

It can be written as a sum of positive squares in 4 ways, for example, as 4168639225 + 3073482721 = 64565^2 + 55439^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 788396 + ... + 797528.

Almost surely, 2^7242121946 is an apocalyptic number.

7242121946 is a deficient number, since it is larger than the sum of its proper divisors (3657407182).

7242121946 is a wasteful number, since it uses less digits than its factorization.

7242121946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10417.

The product of its digits is 48384, while the sum is 38.

The square root of 7242121946 is about 85100.6577295381. The cubic root of 7242121946 is about 1934.7370323267.

The spelling of 7242121946 in words is "seven billion, two hundred forty-two million, one hundred twenty-one thousand, nine hundred forty-six".