1020012144 has 20 divisors (see below), whose sum is σ = 2635031496. Its totient is φ = 340004032.

The previous prime is 1020012139. The next prime is 1020012151. The reversal of 1020012144 is 4412100201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10625079 + ... + 10625174.

Almost surely, 2^1020012144 is an apocalyptic number.

It is an amenable number.

1020012144 is an abundant number, since it is smaller than the sum of its proper divisors (1615019352).

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

1020012144 is a wasteful number, since it uses less digits than its factorization.

1020012144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21250264 (or 21250258 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 1020012144 is about 31937.6289664715. The cubic root of 1020012144 is about 1006.6267044548.

Adding to 1020012144 its reverse (4412100201), we get a palindrome (5432112345).

The spelling of 1020012144 in words is "one billion, twenty million, twelve thousand, one hundred forty-four".