1020144402 has 32 divisors (see below), whose sum is σ = 2269330560. Its totient is φ = 339696720.

The previous prime is 1020144379. The next prime is 1020144403. The reversal of 1020144402 is 2044410201.

1020144402 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not an unprimeable number, because it can be changed into a prime (1020144403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45883 + ... + 64385.

It is an arithmetic number, because the mean of its divisors is an integer number (70916580).

Almost surely, 2^1020144402 is an apocalyptic number.

1020144402 is an abundant number, since it is smaller than the sum of its proper divisors (1249186158).

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

1020144402 is a wasteful number, since it uses less digits than its factorization.

1020144402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19535 (or 19529 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 1020144402 is about 31939.6994663381. The cubic root of 1020144402 is about 1006.6702100417.

Adding to 1020144402 its reverse (2044410201), we get a palindrome (3064554603).

The spelling of 1020144402 in words is "one billion, twenty million, one hundred forty-four thousand, four hundred two".