1240111153 has 2 divisors, whose sum is σ = 1240111154. Its totient is φ = 1240111152.

The previous prime is 1240111139. The next prime is 1240111163. The reversal of 1240111153 is 3511110421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 671431744 + 568679409 = 25912^2 + 23847^2 .

It is a cyclic number.

It is not a de Polignac number, because 1240111153 - 2¹⁷ = 1239980081 is a prime.

It is a super-3 number, since 3×1240111153³ (a number of 28 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1240111153.

It is not a weakly prime, because it can be changed into another prime (1240111163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 620055576 + 620055577.

It is an arithmetic number, because the mean of its divisors is an integer number (620055577).

Almost surely, 2^1240111153 is an apocalyptic number.

It is an amenable number.

1240111153 is a deficient number, since it is larger than the sum of its proper divisors (1).

1240111153 is an equidigital number, since it uses as much as digits as its factorization.

1240111153 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120, while the sum is 19.

The square root of 1240111153 is about 35215.2119544949. The cubic root of 1240111153 is about 1074.3691710482.

Adding to 1240111153 its reverse (3511110421), we get a palindrome (4751221574).

The spelling of 1240111153 in words is "one billion, two hundred forty million, one hundred eleven thousand, one hundred fifty-three".