1241021345 has 8 divisors (see below), whose sum is σ = 1490000640. Its totient is φ = 992300400.

The previous prime is 1241021317. The next prime is 1241021351. The reversal of 1241021345 is 5431201421.

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

It is not a de Polignac number, because 1241021345 - 2¹² = 1241017249 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1241021345.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53855 + ... + 73364.

It is an arithmetic number, because the mean of its divisors is an integer number (186250080).

Almost surely, 2^1241021345 is an apocalyptic number.

It is an amenable number.

1241021345 is a deficient number, since it is larger than the sum of its proper divisors (248979295).

1241021345 is a wasteful number, since it uses less digits than its factorization.

1241021345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129175.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 1241021345 is about 35228.1328628129. The cubic root of 1241021345 is about 1074.6319547720.

Adding to 1241021345 its reverse (5431201421), we get a palindrome (6672222766).

The spelling of 1241021345 in words is "one billion, two hundred forty-one million, twenty-one thousand, three hundred forty-five".