1202434121 has 4 divisors (see below), whose sum is σ = 1374210432. Its totient is φ = 1030657812.

The previous prime is 1202434109. The next prime is 1202434139. The reversal of 1202434121 is 1214342021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1214342021 = 10597 ⋅114593.

It is a cyclic number.

It is not a de Polignac number, because 1202434121 - 2³⁰ = 128692297 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1202434093 and 1202434102.

It is not an unprimeable number, because it can be changed into a prime (1202434151) 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, 85888145 + ... + 85888158.

It is an arithmetic number, because the mean of its divisors is an integer number (343552608).

Almost surely, 2^1202434121 is an apocalyptic number.

It is an amenable number.

1202434121 is a deficient number, since it is larger than the sum of its proper divisors (171776311).

1202434121 is an equidigital number, since it uses as much as digits as its factorization.

1202434121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171776310.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1202434121 is about 34676.1318632860. The cubic root of 1202434121 is about 1063.3765948950.

Adding to 1202434121 its reverse (1214342021), we get a palindrome (2416776142).

The spelling of 1202434121 in words is "one billion, two hundred two million, four hundred thirty-four thousand, one hundred twenty-one".