240121025 has 6 divisors (see below), whose sum is σ = 297750102. Its totient is φ = 192096800.

The previous prime is 240121003. The next prime is 240121027. The reversal of 240121025 is 520121042.

It can be written as a sum of positive squares in 3 ways, for example, as 65141041 + 174979984 = 8071^2 + 13228^2 .

It is not a de Polignac number, because 240121025 - 2¹⁶ = 240055489 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 240120994 and 240121012.

It is not an unprimeable number, because it can be changed into a prime (240121027) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4802396 + ... + 4802445.

It is an arithmetic number, because the mean of its divisors is an integer number (49625017).

Almost surely, 2^240121025 is an apocalyptic number.

240121025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

240121025 is a deficient number, since it is larger than the sum of its proper divisors (57629077).

240121025 is an equidigital number, since it uses as much as digits as its factorization.

240121025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9604851 (or 9604846 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 240121025 is about 15495.8389576041. The cubic root of 240121025 is about 621.5509427521.

Adding to 240121025 its sum of digits (17), we get a palindrome (240121042).

Adding to 240121025 its reverse (520121042), we get a palindrome (760242067).

It can be divided in two parts, 2401 and 21025, that multiplied together give a square (50481025 = 7105²).

The spelling of 240121025 in words is "two hundred forty million, one hundred twenty-one thousand, twenty-five".