1243620411 has 16 divisors (see below), whose sum is σ = 1818905088. Its totient is φ = 749541600.

The previous prime is 1243620409. The next prime is 1243620421. The reversal of 1243620411 is 1140263421.

It is not a de Polignac number, because 1243620411 - 2¹ = 1243620409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1243620421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98131 + ... + 110076.

It is an arithmetic number, because the mean of its divisors is an integer number (113681568).

Almost surely, 2^1243620411 is an apocalyptic number.

1243620411 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1243620411 is a deficient number, since it is larger than the sum of its proper divisors (575284677).

1243620411 is a wasteful number, since it uses less digits than its factorization.

1243620411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208402.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 1243620411 is about 35265.0026371756. The cubic root of 1243620411 is about 1075.3816307911.

Adding to 1243620411 its reverse (1140263421), we get a palindrome (2383883832).

The spelling of 1243620411 in words is "one billion, two hundred forty-three million, six hundred twenty thousand, four hundred eleven".