1243040201403 has 256 divisors, whose sum is σ = 2367047467008. Its totient is φ = 559374336000.

The previous prime is 1243040201401. The next prime is 1243040201419. The reversal of 1243040201403 is 3041020403421.

It is not a de Polignac number, because 1243040201403 - 2¹ = 1243040201401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1243040201401) by changing a digit.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 1939219963 + ... + 1939220603.

It is an arithmetic number, because the mean of its divisors is an integer number (9246279168).

Almost surely, 2^{1243040201403} is an apocalyptic number.

1243040201403 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1243040201403 is a deficient number, since it is larger than the sum of its proper divisors (1124007265605).

1243040201403 is a wasteful number, since it uses less digits than its factorization.

1243040201403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1306.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 1243040201403 its reverse (3041020403421), we get a palindrome (4284060604824).

The spelling of 1243040201403 in words is "one trillion, two hundred forty-three billion, forty million, two hundred one thousand, four hundred three".