1242903401 has 2 divisors, whose sum is σ = 1242903402. Its totient is φ = 1242903400.

The previous prime is 1242903379. The next prime is 1242903419. The reversal of 1242903401 is 1043092421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1242633001 + 270400 = 35251^2 + 520^2 .

It is a cyclic number.

It is not a de Polignac number, because 1242903401 - 2¹⁰ = 1242902377 is a prime.

It is not a weakly prime, because it can be changed into another prime (1242903461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621451700 + 621451701.

It is an arithmetic number, because the mean of its divisors is an integer number (621451701).

Almost surely, 2^1242903401 is an apocalyptic number.

It is an amenable number.

1242903401 is a deficient number, since it is larger than the sum of its proper divisors (1).

1242903401 is an equidigital number, since it uses as much as digits as its factorization.

1242903401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 1242903401 is about 35254.8351435658. The cubic root of 1242903401 is about 1075.1749204453.

Adding to 1242903401 its reverse (1043092421), we get a palindrome (2285995822).

The spelling of 1242903401 in words is "one billion, two hundred forty-two million, nine hundred three thousand, four hundred one".