240121630 has 32 divisors (see below), whose sum is σ = 495880704. Its totient is φ = 82008096.

The previous prime is 240121619. The next prime is 240121631. The reversal of 240121630 is 36121042.

It is a junction number, because it is equal to n+sod(n) for n = 240121598 and 240121607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240121631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11889 + ... + 24931.

It is an arithmetic number, because the mean of its divisors is an integer number (15496272).

Almost surely, 2^240121630 is an apocalyptic number.

240121630 is an abundant number, since it is smaller than the sum of its proper divisors (255759074).

240121630 is a wasteful number, since it uses less digits than its factorization.

240121630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13320.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 240121630 is about 15495.8584789614. The cubic root of 240121630 is about 621.5514647639.

Adding to 240121630 its reverse (36121042), we get a palindrome (276242672).

The spelling of 240121630 in words is "two hundred forty million, one hundred twenty-one thousand, six hundred thirty".