1240626229 has 2 divisors, whose sum is σ = 1240626230. Its totient is φ = 1240626228.

The previous prime is 1240626181. The next prime is 1240626253. The reversal of 1240626229 is 9226260421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1163151025 + 77475204 = 34105^2 + 8802^2 .

It is a cyclic number.

It is not a de Polignac number, because 1240626229 - 2¹³ = 1240618037 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1240626194 and 1240626203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1240626259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 620313114 + 620313115.

It is an arithmetic number, because the mean of its divisors is an integer number (620313115).

Almost surely, 2^1240626229 is an apocalyptic number.

It is an amenable number.

1240626229 is a deficient number, since it is larger than the sum of its proper divisors (1).

1240626229 is an equidigital number, since it uses as much as digits as its factorization.

1240626229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 1240626229 is about 35222.5244552403. The cubic root of 1240626229 is about 1074.5178956676.

The spelling of 1240626229 in words is "one billion, two hundred forty million, six hundred twenty-six thousand, two hundred twenty-nine".