1242002429 has 2 divisors, whose sum is σ = 1242002430. Its totient is φ = 1242002428.

The previous prime is 1242002413. The next prime is 1242002449. The reversal of 1242002429 is 9242002421.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1240941529 + 1060900 = 35227^2 + 1030^2 .

It is an emirp because it is prime and its reverse (9242002421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1242002429 - 2⁴ = 1242002413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1242002398 and 1242002407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1242002449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621001214 + 621001215.

It is an arithmetic number, because the mean of its divisors is an integer number (621001215).

Almost surely, 2^1242002429 is an apocalyptic number.

It is an amenable number.

1242002429 is a deficient number, since it is larger than the sum of its proper divisors (1).

1242002429 is an equidigital number, since it uses as much as digits as its factorization.

1242002429 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 1242002429 is about 35242.0548350972. The cubic root of 1242002429 is about 1074.9150620469.

The spelling of 1242002429 in words is "one billion, two hundred forty-two million, two thousand, four hundred twenty-nine".