1156021062 has 64 divisors (see below), whose sum is σ = 2762342400. Its totient is φ = 315563040.

The previous prime is 1156021057. The next prime is 1156021079. The reversal of 1156021062 is 2601206511.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 97239 + ... + 108477.

It is an arithmetic number, because the mean of its divisors is an integer number (43161600).

Almost surely, 2^1156021062 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1156021062, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1381171200).

1156021062 is an abundant number, since it is smaller than the sum of its proper divisors (1606321338).

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

1156021062 is a wasteful number, since it uses less digits than its factorization.

1156021062 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11361.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 1156021062 is about 34000.3097338833. The cubic root of 1156021062 is about 1049.5148361768.

Adding to 1156021062 its reverse (2601206511), we get a palindrome (3757227573).

The spelling of 1156021062 in words is "one billion, one hundred fifty-six million, twenty-one thousand, sixty-two".