1242932137 has 2 divisors, whose sum is σ = 1242932138. Its totient is φ = 1242932136.

The previous prime is 1242932113. The next prime is 1242932147. The reversal of 1242932137 is 7312392421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 923916816 + 319015321 = 30396^2 + 17861^2 .

It is a cyclic number.

It is not a de Polignac number, because 1242932137 - 2¹⁹ = 1242407849 is a prime.

It is not a weakly prime, because it can be changed into another prime (1242932147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621466068 + 621466069.

It is an arithmetic number, because the mean of its divisors is an integer number (621466069).

Almost surely, 2^1242932137 is an apocalyptic number.

It is an amenable number.

1242932137 is a deficient number, since it is larger than the sum of its proper divisors (1).

1242932137 is an equidigital number, since it uses as much as digits as its factorization.

1242932137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 34.

The square root of 1242932137 is about 35255.2426881450. The cubic root of 1242932137 is about 1075.1832064173.

The spelling of 1242932137 in words is "one billion, two hundred forty-two million, nine hundred thirty-two thousand, one hundred thirty-seven".