1240203141 has 6 divisors (see below), whose sum is σ = 1791404550. Its totient is φ = 826802088.

The previous prime is 1240203109. The next prime is 1240203161. The reversal of 1240203141 is 1413020421.

It can be written as a sum of positive squares in only one way, i.e., 1152874116 + 87329025 = 33954^2 + 9345^2 .

It is not a de Polignac number, because 1240203141 - 2⁵ = 1240203109 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240203161) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 68900166 + ... + 68900183.

It is an arithmetic number, because the mean of its divisors is an integer number (298567425).

Almost surely, 2^1240203141 is an apocalyptic number.

It is an amenable number.

1240203141 is a deficient number, since it is larger than the sum of its proper divisors (551201409).

1240203141 is a wasteful number, since it uses less digits than its factorization.

1240203141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137800355 (or 137800352 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1240203141 is about 35216.5180135686. The cubic root of 1240203141 is about 1074.3957349649.

Adding to 1240203141 its reverse (1413020421), we get a palindrome (2653223562).

The spelling of 1240203141 in words is "one billion, two hundred forty million, two hundred three thousand, one hundred forty-one".