121404530 has 24 divisors (see below), whose sum is σ = 236634372. Its totient is φ = 44825664.

The previous prime is 121404529. The next prime is 121404539. The reversal of 121404530 is 35404121.

It can be written as a sum of positive squares in 6 ways, for example, as 14922769 + 106481761 = 3863^2 + 10319^2 .

It is not an unprimeable number, because it can be changed into a prime (121404539) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34229 + ... + 37608.

Almost surely, 2^121404530 is an apocalyptic number.

121404530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121404530 is a deficient number, since it is larger than the sum of its proper divisors (115229842).

121404530 is a wasteful number, since it uses less digits than its factorization.

121404530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71870 (or 71857 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 121404530 is about 11018.3723843406. The cubic root of 121404530 is about 495.1593270062.

Adding to 121404530 its reverse (35404121), we get a palindrome (156808651).

The spelling of 121404530 in words is "one hundred twenty-one million, four hundred four thousand, five hundred thirty".