1020234540 has 48 divisors (see below), whose sum is σ = 3076401888. Its totient is φ = 251134464.

The previous prime is 1020234539. The next prime is 1020234541. The reversal of 1020234540 is 454320201.

It is an interprime number because it is at equal distance from previous prime (1020234539) and next prime (1020234541).

It is not an unprimeable number, because it can be changed into a prime (1020234541) 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 15 ways as a sum of consecutive naturals, for example, 653217 + ... + 654776.

It is an arithmetic number, because the mean of its divisors is an integer number (64091706).

Almost surely, 2^1020234540 is an apocalyptic number.

1020234540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1020234540 is an abundant number, since it is smaller than the sum of its proper divisors (2056167348).

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

1020234540 is a wasteful number, since it uses less digits than its factorization.

1020234540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1308018 (or 1308016 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 1020234540 is about 31941.1105004194. The cubic root of 1020234540 is about 1006.6998583172.

Adding to 1020234540 its reverse (454320201), we get a palindrome (1474554741).

The spelling of 1020234540 in words is "one billion, twenty million, two hundred thirty-four thousand, five hundred forty".