1217007427 has 2 divisors, whose sum is σ = 1217007428. Its totient is φ = 1217007426.

The previous prime is 1217007409. The next prime is 1217007433. The reversal of 1217007427 is 7247007121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1217007427 - 2¹¹ = 1217005379 is a prime.

It is a super-2 number, since 2×1217007427² = 2962214154746320658, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1217001427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 608503713 + 608503714.

It is an arithmetic number, because the mean of its divisors is an integer number (608503714).

Almost surely, 2^1217007427 is an apocalyptic number.

1217007427 is a deficient number, since it is larger than the sum of its proper divisors (1).

1217007427 is an equidigital number, since it uses as much as digits as its factorization.

1217007427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5488, while the sum is 31.

The square root of 1217007427 is about 34885.6335330176. The cubic root of 1217007427 is about 1067.6553390758.

The spelling of 1217007427 in words is "one billion, two hundred seventeen million, seven thousand, four hundred twenty-seven".