1201052140 has 36 divisors (see below), whose sum is σ = 2545268544. Its totient is φ = 476068096.

The previous prime is 1201052129. The next prime is 1201052141. The reversal of 1201052140 is 412501021.

It is not an unprimeable number, because it can be changed into a prime (1201052141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 253029 + ... + 257731.

It is an arithmetic number, because the mean of its divisors is an integer number (70701904).

Almost surely, 2^1201052140 is an apocalyptic number.

1201052140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201052140 is an abundant number, since it is smaller than the sum of its proper divisors (1344216404).

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

1201052140 is a wasteful number, since it uses less digits than its factorization.

1201052140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4938 (or 4823 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 1201052140 is about 34656.1991568608. The cubic root of 1201052140 is about 1062.9690522323.

Adding to 1201052140 its reverse (412501021), we get a palindrome (1613553161).

The spelling of 1201052140 in words is "one billion, two hundred one million, fifty-two thousand, one hundred forty".