1021124142 has 24 divisors (see below), whose sum is σ = 2342579616. Its totient is φ = 320352576.

The previous prime is 1021124107. The next prime is 1021124173. The reversal of 1021124142 is 2414211201.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1668198 + ... + 1668809.

It is an arithmetic number, because the mean of its divisors is an integer number (97607484).

Almost surely, 2^1021124142 is an apocalyptic number.

1021124142 is an abundant number, since it is smaller than the sum of its proper divisors (1321455474).

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

1021124142 is a wasteful number, since it uses less digits than its factorization.

1021124142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3337032 (or 3337029 counting only the distinct ones).

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

The square root of 1021124142 is about 31955.0331246895. The cubic root of 1021124142 is about 1006.9923734206.

Adding to 1021124142 its reverse (2414211201), we get a palindrome (3435335343).

The spelling of 1021124142 in words is "one billion, twenty-one million, one hundred twenty-four thousand, one hundred forty-two".