1301156120 has 64 divisors (see below), whose sum is σ = 3197607840. Its totient is φ = 472576000.

The previous prime is 1301156107. The next prime is 1301156123. The reversal of 1301156120 is 216511031.

It is a super-2 number, since 2×1301156120² = 3386014497226908800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1301156092 and 1301156101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1301156123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 571304 + ... + 573576.

Almost surely, 2^1301156120 is an apocalyptic number.

1301156120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1301156120 is an abundant number, since it is smaller than the sum of its proper divisors (1896451720).

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

1301156120 is a wasteful number, since it uses less digits than its factorization.

1301156120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3596 (or 3592 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 1301156120 is about 36071.5416914775. The cubic root of 1301156120 is about 1091.7163208255.

Adding to 1301156120 its reverse (216511031), we get a palindrome (1517667151).

The spelling of 1301156120 in words is "one billion, three hundred one million, one hundred fifty-six thousand, one hundred twenty".