1151105420 has 24 divisors (see below), whose sum is σ = 2446449264. Its totient is φ = 454894016.

The previous prime is 1151105407. The next prime is 1151105447. The reversal of 1151105420 is 245011511.

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 = 1151105392 and 1151105401.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 345059 + ... + 348378.

It is an arithmetic number, because the mean of its divisors is an integer number (101935386).

Almost surely, 2^1151105420 is an apocalyptic number.

1151105420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1151105420 is an abundant number, since it is smaller than the sum of its proper divisors (1295343844).

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

1151105420 is a wasteful number, since it uses less digits than its factorization.

1151105420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693529 (or 693527 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 20.

The square root of 1151105420 is about 33927.9445295467. The cubic root of 1151105420 is about 1048.0251375494.

Adding to 1151105420 its reverse (245011511), we get a palindrome (1396116931).

The spelling of 1151105420 in words is "one billion, one hundred fifty-one million, one hundred five thousand, four hundred twenty".