1040121343 has 4 divisors (see below), whose sum is σ = 1059746328. Its totient is φ = 1020496360.

The previous prime is 1040121323. The next prime is 1040121359. The reversal of 1040121343 is 3431210401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3431210401 = 269 ⋅12755429.

It is a cyclic number.

It is not a de Polignac number, because 1040121343 - 2⁵ = 1040121311 is a prime.

It is a super-3 number, since 3×1040121343³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1040121343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1040121323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9812413 + ... + 9812518.

It is an arithmetic number, because the mean of its divisors is an integer number (264936582).

Almost surely, 2^1040121343 is an apocalyptic number.

1040121343 is a deficient number, since it is larger than the sum of its proper divisors (19624985).

1040121343 is an equidigital number, since it uses as much as digits as its factorization.

1040121343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19624984.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1040121343 is about 32250.9122816704. The cubic root of 1040121343 is about 1013.1988060703.

Adding to 1040121343 its reverse (3431210401), we get a palindrome (4471331744).

The spelling of 1040121343 in words is "one billion, forty million, one hundred twenty-one thousand, three hundred forty-three".