1242085937 has 2 divisors, whose sum is σ = 1242085938. Its totient is φ = 1242085936.

The previous prime is 1242085927. The next prime is 1242085969. The reversal of 1242085937 is 7395802421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 947654656 + 294431281 = 30784^2 + 17159^2 .

It is a cyclic number.

It is not a de Polignac number, because 1242085937 - 2⁸ = 1242085681 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1242085894 and 1242085903.

It is not a weakly prime, because it can be changed into another prime (1242085907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621042968 + 621042969.

It is an arithmetic number, because the mean of its divisors is an integer number (621042969).

Almost surely, 2^1242085937 is an apocalyptic number.

It is an amenable number.

1242085937 is a deficient number, since it is larger than the sum of its proper divisors (1).

1242085937 is an equidigital number, since it uses as much as digits as its factorization.

1242085937 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 1242085937 is about 35243.2395928638. The cubic root of 1242085937 is about 1074.9391527125.

The spelling of 1242085937 in words is "one billion, two hundred forty-two million, eighty-five thousand, nine hundred thirty-seven".