1202145755 has 4 divisors (see below), whose sum is σ = 1442574912. Its totient is φ = 961716600.

The previous prime is 1202145739. The next prime is 1202145757. The reversal of 1202145755 is 5575412021.

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

It is not a de Polignac number, because 1202145755 - 2⁴ = 1202145739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1202145757) 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, 120214571 + ... + 120214580.

It is an arithmetic number, because the mean of its divisors is an integer number (360643728).

Almost surely, 2^1202145755 is an apocalyptic number.

1202145755 is a deficient number, since it is larger than the sum of its proper divisors (240429157).

1202145755 is an equidigital number, since it uses as much as digits as its factorization.

1202145755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240429156.

The product of its (nonzero) digits is 14000, while the sum is 32.

The square root of 1202145755 is about 34671.9736242401. The cubic root of 1202145755 is about 1063.2915822899.

Adding to 1202145755 its reverse (5575412021), we get a palindrome (6777557776).

The spelling of 1202145755 in words is "one billion, two hundred two million, one hundred forty-five thousand, seven hundred fifty-five".