1201145154 has 32 divisors (see below), whose sum is σ = 2758613760. Its totient is φ = 344826000.

The previous prime is 1201145137. The next prime is 1201145159. The reversal of 1201145154 is 4515411021.

It is not an unprimeable number, because it can be changed into a prime (1201145159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 477672 + ... + 480179.

It is an arithmetic number, because the mean of its divisors is an integer number (86206680).

Almost surely, 2^1201145154 is an apocalyptic number.

1201145154 is an abundant number, since it is smaller than the sum of its proper divisors (1557468606).

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

1201145154 is a wasteful number, since it uses less digits than its factorization.

1201145154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 957886.

The product of its (nonzero) digits is 800, while the sum is 24.

The square root of 1201145154 is about 34657.5410841566. The cubic root of 1201145154 is about 1062.9964916326.

Adding to 1201145154 its reverse (4515411021), we get a palindrome (5716556175).

The spelling of 1201145154 in words is "one billion, two hundred one million, one hundred forty-five thousand, one hundred fifty-four".