1242256046 has 4 divisors (see below), whose sum is σ = 1863384072. Its totient is φ = 621128022.

The previous prime is 1242256039. The next prime is 1242256051. The reversal of 1242256046 is 6406522421.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310564010 + ... + 310564013.

It is an arithmetic number, because the mean of its divisors is an integer number (465846018).

Almost surely, 2^1242256046 is an apocalyptic number.

1242256046 is a deficient number, since it is larger than the sum of its proper divisors (621128026).

1242256046 is an equidigital number, since it uses as much as digits as its factorization.

1242256046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621128025.

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 1242256046 is about 35245.6528667012. The cubic root of 1242256046 is about 1074.9882229826.

Adding to 1242256046 its reverse (6406522421), we get a palindrome (7648778467).

The spelling of 1242256046 in words is "one billion, two hundred forty-two million, two hundred fifty-six thousand, forty-six".