1201242340 has 24 divisors (see below), whose sum is σ = 2524794552. Its totient is φ = 480080640.

The previous prime is 1201242337. The next prime is 1201242347. The reversal of 1201242340 is 432421021.

It can be written as a sum of positive squares in 4 ways, for example, as 95413824 + 1105828516 = 9768^2 + 33254^2 .

It is not an unprimeable number, because it can be changed into a prime (1201242347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1809 + ... + 49048.

It is an arithmetic number, because the mean of its divisors is an integer number (105199773).

Almost surely, 2^1201242340 is an apocalyptic number.

1201242340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201242340 is an abundant number, since it is smaller than the sum of its proper divisors (1323552212).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1201242340 is a wasteful number, since it uses less digits than its factorization.

1201242340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52047 (or 52045 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 1201242340 is about 34658.9431460338. The cubic root of 1201242340 is about 1063.0251602717.

Adding to 1201242340 its reverse (432421021), we get a palindrome (1633663361).

The spelling of 1201242340 in words is "one billion, two hundred one million, two hundred forty-two thousand, three hundred forty".