1242131055 has 32 divisors (see below), whose sum is σ = 2209006080. Its totient is φ = 590878080.

The previous prime is 1242131053. The next prime is 1242131069. The reversal of 1242131055 is 5501312421.

It is a happy number.

It is not a de Polignac number, because 1242131055 - 2¹ = 1242131053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242131053) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 62275 + ... + 79764.

It is an arithmetic number, because the mean of its divisors is an integer number (69031440).

Almost surely, 2^1242131055 is an apocalyptic number.

1242131055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1242131055 is a deficient number, since it is larger than the sum of its proper divisors (966875025).

1242131055 is a wasteful number, since it uses less digits than its factorization.

1242131055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142111.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 1242131055 is about 35243.8796814426. The cubic root of 1242131055 is about 1074.9521680538.

Adding to 1242131055 its reverse (5501312421), we get a palindrome (6743443476).

The spelling of 1242131055 in words is "one billion, two hundred forty-two million, one hundred thirty-one thousand, fifty-five".