1021342040 has 16 divisors (see below), whose sum is σ = 2298019680. Its totient is φ = 408536800.

The previous prime is 1021342033. The next prime is 1021342057. The reversal of 1021342040 is 402431201.

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, 12766736 + ... + 12766815.

It is an arithmetic number, because the mean of its divisors is an integer number (143626230).

Almost surely, 2^1021342040 is an apocalyptic number.

1021342040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1021342040 is an abundant number, since it is smaller than the sum of its proper divisors (1276677640).

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

1021342040 is a wasteful number, since it uses less digits than its factorization.

1021342040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25533562 (or 25533558 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 1021342040 is about 31958.4423900790. The cubic root of 1021342040 is about 1007.0639957988.

Adding to 1021342040 its reverse (402431201), we get a palindrome (1423773241).

The spelling of 1021342040 in words is "one billion, twenty-one million, three hundred forty-two thousand, forty".