724121121407 has 2 divisors, whose sum is σ = 724121121408. Its totient is φ = 724121121406.

The previous prime is 724121121379. The next prime is 724121121467. The reversal of 724121121407 is 704121121427.

It is a weak prime.

It is an emirp because it is prime and its reverse (704121121427) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-724121121407 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (724121121467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362060560703 + 362060560704.

It is an arithmetic number, because the mean of its divisors is an integer number (362060560704).

Almost surely, 2^724121121407 is an apocalyptic number.

724121121407 is a deficient number, since it is larger than the sum of its proper divisors (1).

724121121407 is an equidigital number, since it uses as much as digits as its factorization.

724121121407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6272, while the sum is 32.

The spelling of 724121121407 in words is "seven hundred twenty-four billion, one hundred twenty-one million, one hundred twenty-one thousand, four hundred seven".