1241020551 has 8 divisors (see below), whose sum is σ = 1708071424. Its totient is φ = 800658360.

The previous prime is 1241020541. The next prime is 1241020657. The reversal of 1241020551 is 1550201421.

1241020551 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 1241020551 - 2⁷ = 1241020423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1241020541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6672061 + ... + 6672246.

It is an arithmetic number, because the mean of its divisors is an integer number (213508928).

Almost surely, 2^1241020551 is an apocalyptic number.

1241020551 is a deficient number, since it is larger than the sum of its proper divisors (467050873).

1241020551 is a wasteful number, since it uses less digits than its factorization.

1241020551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13344341.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 1241020551 is about 35228.1215934089. The cubic root of 1241020551 is about 1074.6317255903.

Adding to 1241020551 its reverse (1550201421), we get a palindrome (2791221972).

The spelling of 1241020551 in words is "one billion, two hundred forty-one million, twenty thousand, five hundred fifty-one".