1117421748 has 36 divisors (see below), whose sum is σ = 2825642820. Its totient is φ = 372335616.

The previous prime is 1117421717. The next prime is 1117421771. The reversal of 1117421748 is 8471247111.

It can be written as a sum of positive squares in 2 ways, for example, as 920636964 + 196784784 = 30342^2 + 14028^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 150786 + ... + 158022.

Almost surely, 2^1117421748 is an apocalyptic number.

1117421748 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1117421748 is an abundant number, since it is smaller than the sum of its proper divisors (1708221072).

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

1117421748 is a wasteful number, since it uses less digits than its factorization.

1117421748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11536 (or 11531 counting only the distinct ones).

The product of its digits is 12544, while the sum is 36.

The square root of 1117421748 is about 33427.8588605373. The cubic root of 1117421748 is about 1037.7013296423.

Adding to 1117421748 its reverse (8471247111), we get a palindrome (9588668859).

The spelling of 1117421748 in words is "one billion, one hundred seventeen million, four hundred twenty-one thousand, seven hundred forty-eight".