1251423 has 8 divisors (see below), whose sum is σ = 1854000. Its totient is φ = 834264.

The previous prime is 1251409. The next prime is 1251427. The reversal of 1251423 is 3241521.

It is not a de Polignac number, because 1251423 - 2¹² = 1247327 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1251396 and 1251405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1251427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23148 + ... + 23201.

It is an arithmetic number, because the mean of its divisors is an integer number (231750).

2^1251423 is an apocalyptic number.

1251423 is a deficient number, since it is larger than the sum of its proper divisors (602577).

1251423 is an equidigital number, since it uses as much as digits as its factorization.

1251423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46358 (or 46352 counting only the distinct ones).

The product of its digits is 240, while the sum is 18.

The square root of 1251423 is about 1118.6701926842. The cubic root of 1251423 is about 107.7625958075.

Adding to 1251423 its reverse (3241521), we get a palindrome (4492944).

The spelling of 1251423 in words is "one million, two hundred fifty-one thousand, four hundred twenty-three".