1031421040 has 40 divisors (see below), whose sum is σ = 2582522208. Its totient is φ = 380832000.

The previous prime is 1031421037. The next prime is 1031421071. The reversal of 1031421040 is 401241301.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 494836 + ... + 496915.

Almost surely, 2^1031421040 is an apocalyptic number.

1031421040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1031421040 is an abundant number, since it is smaller than the sum of its proper divisors (1551101168).

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

1031421040 is a wasteful number, since it uses less digits than its factorization.

1031421040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 991777 (or 991771 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1031421040 is about 32115.7444254372. The cubic root of 1031421040 is about 1010.3658577198.

Adding to 1031421040 its reverse (401241301), we get a palindrome (1432662341).

The spelling of 1031421040 in words is "one billion, thirty-one million, four hundred twenty-one thousand, forty".