7121407238 has 8 divisors (see below), whose sum is σ = 11653211880. Its totient is φ = 3237003280.

The previous prime is 7121407231. The next prime is 7121407247. The reversal of 7121407238 is 8327041217.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 7121407198 and 7121407207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7121407231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161850143 + ... + 161850186.

It is an arithmetic number, because the mean of its divisors is an integer number (1456651485).

Almost surely, 2^7121407238 is an apocalyptic number.

7121407238 is a deficient number, since it is larger than the sum of its proper divisors (4531804642).

7121407238 is a wasteful number, since it uses less digits than its factorization.

7121407238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323700342.

The product of its (nonzero) digits is 18816, while the sum is 35.

The square root of 7121407238 is about 84388.4307117984. The cubic root of 7121407238 is about 1923.9270785435.

The spelling of 7121407238 in words is "seven billion, one hundred twenty-one million, four hundred seven thousand, two hundred thirty-eight".