121342401 has 16 divisors (see below), whose sum is σ = 185566720. Its totient is φ = 78284880.

The previous prime is 121342393. The next prime is 121342421. The reversal of 121342401 is 104243121.

It is not a de Polignac number, because 121342401 - 2³ = 121342393 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (121342421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71650 + ... + 73323.

It is an arithmetic number, because the mean of its divisors is an integer number (11597920).

Almost surely, 2^121342401 is an apocalyptic number.

It is an amenable number.

121342401 is a deficient number, since it is larger than the sum of its proper divisors (64224319).

121342401 is a wasteful number, since it uses less digits than its factorization.

121342401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145013 (or 145007 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 121342401 is about 11015.5526869967. The cubic root of 121342401 is about 495.0748463499.

Adding to 121342401 its reverse (104243121), we get a palindrome (225585522).

It can be divided in two parts, 12134 and 2401, that added together give a triangular number (14535 = T₁₇₀).

The spelling of 121342401 in words is "one hundred twenty-one million, three hundred forty-two thousand, four hundred one".