1240422403 has 4 divisors (see below), whose sum is σ = 1353188088. Its totient is φ = 1127656720.

The previous prime is 1240422401. The next prime is 1240422433. The reversal of 1240422403 is 3042240421.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1240422403 - 2¹ = 1240422401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1240422401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56382826 + ... + 56382847.

It is an arithmetic number, because the mean of its divisors is an integer number (338297022).

Almost surely, 2^1240422403 is an apocalyptic number.

1240422403 is a deficient number, since it is larger than the sum of its proper divisors (112765685).

1240422403 is a wasteful number, since it uses less digits than its factorization.

1240422403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112765684.

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

The square root of 1240422403 is about 35219.6309321946. The cubic root of 1240422403 is about 1074.4590472477.

Adding to 1240422403 its reverse (3042240421), we get a palindrome (4282662824).

The spelling of 1240422403 in words is "one billion, two hundred forty million, four hundred twenty-two thousand, four hundred three".