1240430671 has 2 divisors, whose sum is σ = 1240430672. Its totient is φ = 1240430670.

The previous prime is 1240430657. The next prime is 1240430677. The reversal of 1240430671 is 1760340421.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1240430671 - 2²¹ = 1238333519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1240430677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 620215335 + 620215336.

It is an arithmetic number, because the mean of its divisors is an integer number (620215336).

Almost surely, 2^1240430671 is an apocalyptic number.

1240430671 is a deficient number, since it is larger than the sum of its proper divisors (1).

1240430671 is an equidigital number, since it uses as much as digits as its factorization.

1240430671 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 1240430671 is about 35219.7483097196. The cubic root of 1240430671 is about 1074.4614345011.

The spelling of 1240430671 in words is "one billion, two hundred forty million, four hundred thirty thousand, six hundred seventy-one".