121442404 has 6 divisors (see below), whose sum is σ = 212524214. Its totient is φ = 60721200.

The previous prime is 121442389. The next prime is 121442437. The reversal of 121442404 is 404244121.

It can be written as a sum of positive squares in only one way, i.e., 67272804 + 54169600 = 8202^2 + 7360^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15180297 + ... + 15180304.

Almost surely, 2^121442404 is an apocalyptic number.

It is an amenable number.

121442404 is a deficient number, since it is larger than the sum of its proper divisors (91081810).

121442404 is a wasteful number, since it uses less digits than its factorization.

121442404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30360605 (or 30360603 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 22.

The square root of 121442404 is about 11020.0909252147. The cubic root of 121442404 is about 495.2108124945.

Adding to 121442404 its reverse (404244121), we get a palindrome (525686525).

The spelling of 121442404 in words is "one hundred twenty-one million, four hundred forty-two thousand, four hundred four".