1142421102 has 48 divisors (see below), whose sum is σ = 2546811072. Its totient is φ = 369835200.

The previous prime is 1142421053. The next prime is 1142421103. The reversal of 1142421102 is 2011242411.

1142421102 is a `hidden beast` number, since 1 + 142 + 421 + 102 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142421103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 465643 + ... + 468089.

It is an arithmetic number, because the mean of its divisors is an integer number (53058564).

Almost surely, 2^1142421102 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1142421102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1273405536).

1142421102 is an abundant number, since it is smaller than the sum of its proper divisors (1404389970).

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

1142421102 is a wasteful number, since it uses less digits than its factorization.

1142421102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3193 (or 3190 counting only the distinct ones).

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

The square root of 1142421102 is about 33799.7204426309. The cubic root of 1142421102 is about 1045.3829330021.

Adding to 1142421102 its reverse (2011242411), we get a palindrome (3153663513).

The spelling of 1142421102 in words is "one billion, one hundred forty-two million, four hundred twenty-one thousand, one hundred two".