1142412021 has 6 divisors (see below), whose sum is σ = 1650150710. Its totient is φ = 761608008.

The previous prime is 1142411983. The next prime is 1142412043. The reversal of 1142412021 is 1202142411.

It can be written as a sum of positive squares in only one way, i.e., 920819025 + 221592996 = 30345^2 + 14886^2 .

It is not a de Polignac number, because 1142412021 - 2⁶ = 1142411957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1142411985 and 1142412003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142412421) 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, 63467326 + ... + 63467343.

Almost surely, 2^1142412021 is an apocalyptic number.

It is an amenable number.

1142412021 is a deficient number, since it is larger than the sum of its proper divisors (507738689).

1142412021 is a wasteful number, since it uses less digits than its factorization.

1142412021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126934675 (or 126934672 counting only the distinct ones).

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

The square root of 1142412021 is about 33799.5861069333. The cubic root of 1142412021 is about 1045.3801631105.

Adding to 1142412021 its reverse (1202142411), we get a palindrome (2344554432).

The spelling of 1142412021 in words is "one billion, one hundred forty-two million, four hundred twelve thousand, twenty-one".