1420784507 has 2 divisors, whose sum is σ = 1420784508. Its totient is φ = 1420784506.

The previous prime is 1420784461. The next prime is 1420784539. The reversal of 1420784507 is 7054870241.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1420784507 - 2²⁰ = 1419735931 is a prime.

It is not a weakly prime, because it can be changed into another prime (1420784557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710392253 + 710392254.

It is an arithmetic number, because the mean of its divisors is an integer number (710392254).

Almost surely, 2^1420784507 is an apocalyptic number.

1420784507 is a deficient number, since it is larger than the sum of its proper divisors (1).

1420784507 is an equidigital number, since it uses as much as digits as its factorization.

1420784507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62720, while the sum is 38.

The square root of 1420784507 is about 37693.2952526043. The cubic root of 1420784507 is about 1124.1978168127.

The spelling of 1420784507 in words is "one billion, four hundred twenty million, seven hundred eighty-four thousand, five hundred seven".