121403002408 has 32 divisors (see below), whose sum is σ = 230480056800. Its totient is φ = 59942333248.

The previous prime is 121403002403. The next prime is 121403002421. The reversal of 121403002408 is 804200304121.

It is not an unprimeable number, because it can be changed into a prime (121403002403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1428123 + ... + 1510741.

It is an arithmetic number, because the mean of its divisors is an integer number (7202501775).

Almost surely, 2^121403002408 is an apocalyptic number.

It is an amenable number.

121403002408 is a deficient number, since it is larger than the sum of its proper divisors (109077054392).

121403002408 is a wasteful number, since it uses less digits than its factorization.

121403002408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84921 (or 84917 counting only the distinct ones).

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

Adding to 121403002408 its reverse (804200304121), we get a palindrome (925603306529).

The spelling of 121403002408 in words is "one hundred twenty-one billion, four hundred three million, two thousand, four hundred eight".