1142101721 has 8 divisors (see below), whose sum is σ = 1179333888. Its totient is φ = 1104894000.

The previous prime is 1142101711. The next prime is 1142101757. The reversal of 1142101721 is 1271012411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1142101721 - 2³⁰ = 68359897 is a prime.

It is a super-2 number, since 2×1142101721² = 2608792682222323682, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1142101693 and 1142101702.

It is not an unprimeable number, because it can be changed into a prime (1142101711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168131 + ... + 174791.

It is an arithmetic number, because the mean of its divisors is an integer number (147416736).

Almost surely, 2^1142101721 is an apocalyptic number.

It is an amenable number.

1142101721 is a deficient number, since it is larger than the sum of its proper divisors (37232167).

1142101721 is an equidigital number, since it uses as much as digits as its factorization.

1142101721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12223.

The product of its (nonzero) digits is 112, while the sum is 20.

The square root of 1142101721 is about 33794.9955022929. The cubic root of 1142101721 is about 1045.2855064156.

The spelling of 1142101721 in words is "one billion, one hundred forty-two million, one hundred one thousand, seven hundred twenty-one".