1421147 has 24 divisors (see below), whose sum is σ = 1876896. Its totient is φ = 1064448.

The previous prime is 1421141. The next prime is 1421153. The reversal of 1421147 is 7411241.

It is an interprime number because it is at equal distance from previous prime (1421141) and next prime (1421153).

It is not a de Polignac number, because 1421147 - 2⁶ = 1421083 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1421141) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14603 + ... + 14699.

It is an arithmetic number, because the mean of its divisors is an integer number (78204).

2^1421147 is an apocalyptic number.

1421147 is a deficient number, since it is larger than the sum of its proper divisors (455749).

1421147 is a wasteful number, since it uses less digits than its factorization.

1421147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147 (or 140 counting only the distinct ones).

The product of its digits is 224, while the sum is 20.

The square root of 1421147 is about 1192.1187021434. The cubic root of 1421147 is about 112.4293416388.

Adding to 1421147 its reverse (7411241), we get a palindrome (8832388).

The spelling of 1421147 in words is "one million, four hundred twenty-one thousand, one hundred forty-seven".