1040421540 has 48 divisors (see below), whose sum is σ = 2941481088. Its totient is φ = 274750464.

The previous prime is 1040421511. The next prime is 1040421541. The reversal of 1040421540 is 451240401.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1040421541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77997 + ... + 90356.

It is an arithmetic number, because the mean of its divisors is an integer number (61280856).

Almost surely, 2^1040421540 is an apocalyptic number.

1040421540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1040421540 is an abundant number, since it is smaller than the sum of its proper divisors (1901059548).

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

1040421540 is a wasteful number, since it uses less digits than its factorization.

1040421540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168468 (or 168466 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 1040421540 is about 32255.5660313069. The cubic root of 1040421540 is about 1013.2962722576.

Adding to 1040421540 its reverse (451240401), we get a palindrome (1491661941).

The spelling of 1040421540 in words is "one billion, forty million, four hundred twenty-one thousand, five hundred forty".