1421366047 has 4 divisors (see below), whose sum is σ = 1421598976. Its totient is φ = 1421133120.

The previous prime is 1421366033. The next prime is 1421366053. The reversal of 1421366047 is 7406631241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7406631241 = 251 ⋅29508491.

It is a cyclic number.

It is not a de Polignac number, because 1421366047 - 2¹⁵ = 1421333279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421366017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107058 + ... + 119599.

It is an arithmetic number, because the mean of its divisors is an integer number (355399744).

Almost surely, 2^1421366047 is an apocalyptic number.

1421366047 is a deficient number, since it is larger than the sum of its proper divisors (232929).

1421366047 is an equidigital number, since it uses as much as digits as its factorization.

1421366047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232928.

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 1421366047 is about 37701.0085674110. The cubic root of 1421366047 is about 1124.3511773489.

Adding to 1421366047 its reverse (7406631241), we get a palindrome (8827997288).

The spelling of 1421366047 in words is "one billion, four hundred twenty-one million, three hundred sixty-six thousand, forty-seven".