1252121 has 12 divisors (see below), whose sum is σ = 1405440. Its totient is φ = 1113840.

The previous prime is 1252109. The next prime is 1252123. The reversal of 1252121 is 1212521.

1252121 is nontrivially palindromic in base 2.

It is not a de Polignac number, because 1252121 - 2⁶ = 1252057 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1252096 and 1252105.

It is not an unprimeable number, because it can be changed into a prime (1252123) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5120 + ... + 5358.

It is an arithmetic number, because the mean of its divisors is an integer number (117120).

2^1252121 is an apocalyptic number.

It is an amenable number.

1252121 is a deficient number, since it is larger than the sum of its proper divisors (153319).

1252121 is a wasteful number, since it uses less digits than its factorization.

1252121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296 (or 283 counting only the distinct ones).

The product of its digits is 40, while the sum is 14.

The square root of 1252121 is about 1118.9821267563. The cubic root of 1252121 is about 107.7826274865.

Adding to 1252121 its product of digits (40), we get a square (1252161 = 1119²).

Adding to 1252121 its reverse (1212521), we get a palindrome (2464642).

The spelling of 1252121 in words is "one million, two hundred fifty-two thousand, one hundred twenty-one".