1242247437 has 12 divisors (see below), whose sum is σ = 1796835040. Its totient is φ = 827021448.

The previous prime is 1242247403. The next prime is 1242247441. The reversal of 1242247437 is 7347422421.

It is not a de Polignac number, because 1242247437 - 2⁶ = 1242247373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242240437) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 88387 + ... + 101472.

Almost surely, 2^1242247437 is an apocalyptic number.

It is an amenable number.

1242247437 is a deficient number, since it is larger than the sum of its proper divisors (554587603).

1242247437 is a wasteful number, since it uses less digits than its factorization.

1242247437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190592 (or 190589 counting only the distinct ones).

The product of its digits is 75264, while the sum is 36.

The square root of 1242247437 is about 35245.5307379531. The cubic root of 1242247437 is about 1074.9857397063.

Adding to 1242247437 its reverse (7347422421), we get a palindrome (8589669858).

The spelling of 1242247437 in words is "one billion, two hundred forty-two million, two hundred forty-seven thousand, four hundred thirty-seven".