10542121 has 4 divisors (see below), whose sum is σ = 10557700. Its totient is φ = 10526544.

The previous prime is 10542113. The next prime is 10542157. The reversal of 10542121 is 12124501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12124501 = 577 ⋅21013.

It can be written as a sum of positive squares in 2 ways, for example, as 1904400 + 8637721 = 1380^2 + 2939^2 .

It is a cyclic number.

It is not a de Polignac number, because 10542121 - 2³ = 10542113 is a prime.

It is a super-2 number, since 2×10542121² = 222272630357282, 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 = 10542095 and 10542104.

It is not an unprimeable number, because it can be changed into a prime (10542421) 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, 6726 + ... + 8143.

It is an arithmetic number, because the mean of its divisors is an integer number (2639425).

Almost surely, 2^10542121 is an apocalyptic number.

It is an amenable number.

10542121 is a deficient number, since it is larger than the sum of its proper divisors (15579).

10542121 is an equidigital number, since it uses as much as digits as its factorization.

10542121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15578.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 10542121 is about 3246.8632555129. The cubic root of 10542121 is about 219.2683754162.

Adding to 10542121 its reverse (12124501), we get a palindrome (22666622).

The spelling of 10542121 in words is "ten million, five hundred forty-two thousand, one hundred twenty-one".