1112357421 has 32 divisors (see below), whose sum is σ = 1886449920. Its totient is φ = 634588992.

The previous prime is 1112357417. The next prime is 1112357443. The reversal of 1112357421 is 1247532111.

1112357421 is a `hidden beast` number, since 1 + 1 + 1 + 235 + 7 + 421 = 666.

It is not a de Polignac number, because 1112357421 - 2² = 1112357417 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1112352421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 118911 + ... + 127923.

It is an arithmetic number, because the mean of its divisors is an integer number (58951560).

Almost surely, 2^1112357421 is an apocalyptic number.

It is an amenable number.

1112357421 is a deficient number, since it is larger than the sum of its proper divisors (774092499).

1112357421 is an equidigital number, since it uses as much as digits as its factorization.

1112357421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9682 (or 9676 counting only the distinct ones).

The product of its digits is 1680, while the sum is 27.

The square root of 1112357421 is about 33352.0227422566. The cubic root of 1112357421 is about 1036.1312814085.

Adding to 1112357421 its reverse (1247532111), we get a palindrome (2359889532).

It can be divided in two parts, 111 and 2357421, that added together give a palindrome (2357532).

The spelling of 1112357421 in words is "one billion, one hundred twelve million, three hundred fifty-seven thousand, four hundred twenty-one".