1242341121 has 32 divisors (see below), whose sum is σ = 1980460800. Its totient is φ = 677698560.

The previous prime is 1242341099. The next prime is 1242341129. The reversal of 1242341121 is 1211432421.

It is not a de Polignac number, because 1242341121 - 2⁶ = 1242341057 is a prime.

It is a super-2 number, since 2×1242341121² = 3086822921855073282, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (1242341129) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42741 + ... + 65661.

It is an arithmetic number, because the mean of its divisors is an integer number (61889400).

Almost surely, 2^1242341121 is an apocalyptic number.

It is an amenable number.

1242341121 is a deficient number, since it is larger than the sum of its proper divisors (738119679).

1242341121 is a wasteful number, since it uses less digits than its factorization.

1242341121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23049.

The product of its digits is 384, while the sum is 21.

The square root of 1242341121 is about 35246.8597324641. The cubic root of 1242341121 is about 1075.0127623507.

Adding to 1242341121 its reverse (1211432421), we get a palindrome (2453773542).

The spelling of 1242341121 in words is "one billion, two hundred forty-two million, three hundred forty-one thousand, one hundred twenty-one".