121342142401 has 4 divisors (see below), whose sum is σ = 121489941204. Its totient is φ = 121194343600.

The previous prime is 121342142399. The next prime is 121342142413. The reversal of 121342142401 is 104241243121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 104241243121 = 3571 ⋅29191051.

It can be written as a sum of positive squares in 2 ways, for example, as 67402544400 + 53939598001 = 259620^2 + 232249^2 .

It is a cyclic number.

It is not a de Polignac number, because 121342142401 - 2¹ = 121342142399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121342142101) 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, 73898170 + ... + 73899811.

It is an arithmetic number, because the mean of its divisors is an integer number (30372485301).

Almost surely, 2^121342142401 is an apocalyptic number.

It is an amenable number.

121342142401 is a deficient number, since it is larger than the sum of its proper divisors (147798803).

121342142401 is an equidigital number, since it uses as much as digits as its factorization.

121342142401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147798802.

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 121342142401 its reverse (104241243121), we get a palindrome (225583385522).

The spelling of 121342142401 in words is "one hundred twenty-one billion, three hundred forty-two million, one hundred forty-two thousand, four hundred one".