942126389 has 2 divisors, whose sum is σ = 942126390. Its totient is φ = 942126388.

The previous prime is 942126379. The next prime is 942126397. The reversal of 942126389 is 983621249.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 921122500 + 21003889 = 30350^2 + 4583^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-942126389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (942126359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 471063194 + 471063195.

It is an arithmetic number, because the mean of its divisors is an integer number (471063195).

Almost surely, 2^942126389 is an apocalyptic number.

It is an amenable number.

942126389 is a deficient number, since it is larger than the sum of its proper divisors (1).

942126389 is an equidigital number, since it uses as much as digits as its factorization.

942126389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 186624, while the sum is 44.

The square root of 942126389 is about 30694.0774254578. The cubic root of 942126389 is about 980.3241982364.

The spelling of 942126389 in words is "nine hundred forty-two million, one hundred twenty-six thousand, three hundred eighty-nine".