1235140153 has 4 divisors (see below), whose sum is σ = 1330150948. Its totient is φ = 1140129360.

The previous prime is 1235140133. The next prime is 1235140157. The reversal of 1235140153 is 3510415321.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 563967504 + 671172649 = 23748^2 + 25907^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1235140153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1235140157) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47505378 + ... + 47505403.

It is an arithmetic number, because the mean of its divisors is an integer number (332537737).

Almost surely, 2^1235140153 is an apocalyptic number.

1235140153 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1235140153 is a deficient number, since it is larger than the sum of its proper divisors (95010795).

1235140153 is an equidigital number, since it uses as much as digits as its factorization.

1235140153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95010794.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 1235140153 is about 35144.5607882642. The cubic root of 1235140153 is about 1072.9317081934.

Adding to 1235140153 its reverse (3510415321), we get a palindrome (4745555474).

The spelling of 1235140153 in words is "one billion, two hundred thirty-five million, one hundred forty thousand, one hundred fifty-three".