1203120153 has 24 divisors (see below), whose sum is σ = 1783023840. Its totient is φ = 781468800.

The previous prime is 1203120143. The next prime is 1203120161. The reversal of 1203120153 is 3510213021.

It is not a de Polignac number, because 1203120153 - 2⁶ = 1203120089 is a prime.

It is a super-3 number, since 3×1203120153³ (a number of 28 digits) contains 333 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1203120103) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49978 + ... + 70028.

It is an arithmetic number, because the mean of its divisors is an integer number (74292660).

Almost surely, 2^1203120153 is an apocalyptic number.

It is an amenable number.

1203120153 is a deficient number, since it is larger than the sum of its proper divisors (579903687).

1203120153 is a wasteful number, since it uses less digits than its factorization.

1203120153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20229 (or 20226 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 1203120153 is about 34686.0224442065. The cubic root of 1203120153 is about 1063.5787880037.

Adding to 1203120153 its reverse (3510213021), we get a palindrome (4713333174).

The spelling of 1203120153 in words is "one billion, two hundred three million, one hundred twenty thousand, one hundred fifty-three".