121445004 has 24 divisors (see below), whose sum is σ = 287603008. Its totient is φ = 39877200.

The previous prime is 121444987. The next prime is 121445021. The reversal of 121445004 is 400544121.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (121444987) and next prime (121445021).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74722 + ... + 76329.

Almost surely, 2^121445004 is an apocalyptic number.

It is an amenable number.

121445004 is an abundant number, since it is smaller than the sum of its proper divisors (166158004).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121445004 is a wasteful number, since it uses less digits than its factorization.

121445004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151125 (or 151123 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 121445004 is about 11020.2088909421. The cubic root of 121445004 is about 495.2143465125.

Adding to 121445004 its reverse (400544121), we get a palindrome (521989125).

The spelling of 121445004 in words is "one hundred twenty-one million, four hundred forty-five thousand, four".