511121242 has 16 divisors (see below), whose sum is σ = 833068800. Its totient is φ = 234299520.

The previous prime is 511121207. The next prime is 511121311. The reversal of 511121242 is 242121115.

It is a super-2 number, since 2×511121242² = 522489848047245128, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

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, 215767 + ... + 218122.

It is an arithmetic number, because the mean of its divisors is an integer number (52066800).

Almost surely, 2^511121242 is an apocalyptic number.

511121242 is a deficient number, since it is larger than the sum of its proper divisors (321947558).

511121242 is a wasteful number, since it uses less digits than its factorization.

511121242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433941.

The product of its digits is 160, while the sum is 19.

The square root of 511121242 is about 22607.9906670186. The cubic root of 511121242 is about 799.5420514456.

Adding to 511121242 its reverse (242121115), we get a palindrome (753242357).

The spelling of 511121242 in words is "five hundred eleven million, one hundred twenty-one thousand, two hundred forty-two".