1203421493 has 2 divisors, whose sum is σ = 1203421494. Its totient is φ = 1203421492.

The previous prime is 1203421489. The next prime is 1203421523. The reversal of 1203421493 is 3941243021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1152127249 + 51294244 = 33943^2 + 7162^2 .

It is an emirp because it is prime and its reverse (3941243021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1203421493 - 2² = 1203421489 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1203421423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601710746 + 601710747.

It is an arithmetic number, because the mean of its divisors is an integer number (601710747).

Almost surely, 2^1203421493 is an apocalyptic number.

It is an amenable number.

1203421493 is a deficient number, since it is larger than the sum of its proper divisors (1).

1203421493 is an equidigital number, since it uses as much as digits as its factorization.

1203421493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 1203421493 is about 34690.3659969162. The cubic root of 1203421493 is about 1063.6675771622.

The spelling of 1203421493 in words is "one billion, two hundred three million, four hundred twenty-one thousand, four hundred ninety-three".