1421456987 has 2 divisors, whose sum is σ = 1421456988. Its totient is φ = 1421456986.

The previous prime is 1421456963. The next prime is 1421456999. The reversal of 1421456987 is 7896541241.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1421456987 - 2⁶ = 1421456923 is a prime.

It is a super-2 number, since 2×1421456987² = 4041079931782236338, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1421453987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710728493 + 710728494.

It is an arithmetic number, because the mean of its divisors is an integer number (710728494).

Almost surely, 2^1421456987 is an apocalyptic number.

1421456987 is a deficient number, since it is larger than the sum of its proper divisors (1).

1421456987 is an equidigital number, since it uses as much as digits as its factorization.

1421456987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 483840, while the sum is 47.

The square root of 1421456987 is about 37702.2146166508. The cubic root of 1421456987 is about 1124.3751557641.

The spelling of 1421456987 in words is "one billion, four hundred twenty-one million, four hundred fifty-six thousand, nine hundred eighty-seven".