1240635245 has 8 divisors (see below), whose sum is σ = 1491410016. Its totient is φ = 990743056.

The previous prime is 1240635223. The next prime is 1240635251. The reversal of 1240635245 is 5425360421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1240635245 - 2¹⁰ = 1240634221 is a prime.

It is a super-2 number, since 2×1240635245² = 3078351622272420050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent 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, 217547 + ... + 223176.

It is an arithmetic number, because the mean of its divisors is an integer number (186426252).

Almost surely, 2^1240635245 is an apocalyptic number.

It is an amenable number.

1240635245 is a deficient number, since it is larger than the sum of its proper divisors (250774771).

1240635245 is an equidigital number, since it uses as much as digits as its factorization.

1240635245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441291.

The product of its (nonzero) digits is 28800, while the sum is 32.

The square root of 1240635245 is about 35222.6524412912. The cubic root of 1240635245 is about 1074.5204986084.

Adding to 1240635245 its reverse (5425360421), we get a palindrome (6665995666).

The spelling of 1240635245 in words is "one billion, two hundred forty million, six hundred thirty-five thousand, two hundred forty-five".