1421286417 has 6 divisors (see below), whose sum is σ = 2052969282. Its totient is φ = 947524272.

The previous prime is 1421286413. The next prime is 1421286463. The reversal of 1421286417 is 7146821241.

It is a happy number.

1421286417 is a `hidden beast` number, since 1 + 4 + 2 + 1 + 2 + 8 + 641 + 7 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1175392656 + 245893761 = 34284^2 + 15681^2 .

It is not a de Polignac number, because 1421286417 - 2² = 1421286413 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1421286413) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 78960348 + ... + 78960365.

It is an arithmetic number, because the mean of its divisors is an integer number (342161547).

Almost surely, 2^1421286417 is an apocalyptic number.

It is an amenable number.

1421286417 is a deficient number, since it is larger than the sum of its proper divisors (631682865).

1421286417 is a wasteful number, since it uses less digits than its factorization.

1421286417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157920719 (or 157920716 counting only the distinct ones).

The product of its digits is 21504, while the sum is 36.

The square root of 1421286417 is about 37699.9524800762. The cubic root of 1421286417 is about 1124.3301802345.

The spelling of 1421286417 in words is "one billion, four hundred twenty-one million, two hundred eighty-six thousand, four hundred seventeen".