1202405121 has 32 divisors (see below), whose sum is σ = 1894389120. Its totient is φ = 751145472.

The previous prime is 1202405081. The next prime is 1202405123. The reversal of 1202405121 is 1215042021.

It is not a de Polignac number, because 1202405121 - 2⁷ = 1202404993 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1202405094 and 1202405103.

It is not an unprimeable number, because it can be changed into a prime (1202405123) 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, 101326 + ... + 112568.

It is an arithmetic number, because the mean of its divisors is an integer number (59199660).

Almost surely, 2^1202405121 is an apocalyptic number.

It is an amenable number.

1202405121 is a deficient number, since it is larger than the sum of its proper divisors (691983999).

1202405121 is a wasteful number, since it uses less digits than its factorization.

1202405121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11502 (or 11496 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 1202405121 is about 34675.7137057047. The cubic root of 1202405121 is about 1063.3680460776.

Adding to 1202405121 its reverse (1215042021), we get a palindrome (2417447142).

The spelling of 1202405121 in words is "one billion, two hundred two million, four hundred five thousand, one hundred twenty-one".