121003530 has 16 divisors (see below), whose sum is σ = 290408544. Its totient is φ = 32267600.

The previous prime is 121003517. The next prime is 121003577. The reversal of 121003530 is 35300121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

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, 2016696 + ... + 2016755.

It is an arithmetic number, because the mean of its divisors is an integer number (18150534).

Almost surely, 2^121003530 is an apocalyptic number.

121003530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121003530 is an abundant number, since it is smaller than the sum of its proper divisors (169405014).

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

121003530 is a wasteful number, since it uses less digits than its factorization.

121003530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4033461.

The product of its (nonzero) digits is 90, while the sum is 15.

The square root of 121003530 is about 11000.1604533752. The cubic root of 121003530 is about 494.6135541097.

Adding to 121003530 its reverse (35300121), we get a palindrome (156303651).

The spelling of 121003530 in words is "one hundred twenty-one million, three thousand, five hundred thirty".