1421123 has 4 divisors (see below), whose sum is σ = 1550328. Its totient is φ = 1291920.

The previous prime is 1421113. The next prime is 1421141. The reversal of 1421123 is 3211241.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1421123 - 2¹⁰ = 1420099 is a prime.

It is a super-2 number, since 2×1421123² = 4039181162258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1421098 and 1421107.

It is not an unprimeable number, because it can be changed into a prime (1421113) 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, 64586 + ... + 64607.

It is an arithmetic number, because the mean of its divisors is an integer number (387582).

2^1421123 is an apocalyptic number.

1421123 is a deficient number, since it is larger than the sum of its proper divisors (129205).

1421123 is a wasteful number, since it uses less digits than its factorization.

1421123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129204.

The product of its digits is 48, while the sum is 14.

The square root of 1421123 is about 1192.1086359892. The cubic root of 1421123 is about 112.4287087417.

Adding to 1421123 its reverse (3211241), we get a palindrome (4632364).

It can be divided in two parts, 1 and 421123, that added together give a palindrome (421124).

The spelling of 1421123 in words is "one million, four hundred twenty-one thousand, one hundred twenty-three".