1244023402 has 8 divisors (see below), whose sum is σ = 1947167136. Its totient is φ = 594967692.

The previous prime is 1244023369. The next prime is 1244023421. The reversal of 1244023402 is 2043204421.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13521948 + ... + 13522039.

It is an arithmetic number, because the mean of its divisors is an integer number (243395892).

Almost surely, 2^1244023402 is an apocalyptic number.

1244023402 is a deficient number, since it is larger than the sum of its proper divisors (703143734).

1244023402 is a wasteful number, since it uses less digits than its factorization.

1244023402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27044012.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 1244023402 is about 35270.7159269556. The cubic root of 1244023402 is about 1075.4977761767.

Adding to 1244023402 its reverse (2043204421), we get a palindrome (3287227823).

The spelling of 1244023402 in words is "one billion, two hundred forty-four million, twenty-three thousand, four hundred two".