1120142421 has 6 divisors (see below), whose sum is σ = 1617983510. Its totient is φ = 746761608.

The previous prime is 1120142417. The next prime is 1120142431. The reversal of 1120142421 is 1242410211.

1120142421 is a `hidden beast` number, since 1 + 1 + 201 + 42 + 421 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1119906225 + 236196 = 33465^2 + 486^2 .

It is not a de Polignac number, because 1120142421 - 2² = 1120142417 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1120142394 and 1120142403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1120142431) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 62230126 + ... + 62230143.

Almost surely, 2^1120142421 is an apocalyptic number.

It is an amenable number.

1120142421 is a deficient number, since it is larger than the sum of its proper divisors (497841089).

1120142421 is a wasteful number, since it uses less digits than its factorization.

1120142421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124460275 (or 124460272 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 1120142421 is about 33468.5288143952. The cubic root of 1120142421 is about 1038.5428375642.

Adding to 1120142421 its reverse (1242410211), we get a palindrome (2362552632).

The spelling of 1120142421 in words is "one billion, one hundred twenty million, one hundred forty-two thousand, four hundred twenty-one".