1040402141 has 4 divisors (see below), whose sum is σ = 1041948732. Its totient is φ = 1038855552.

The previous prime is 1040402117. The next prime is 1040402147. The reversal of 1040402141 is 1412040401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1412040401 = 32341 ⋅43661.

It can be written as a sum of positive squares in 2 ways, for example, as 412699225 + 627702916 = 20315^2 + 25054^2 .

It is a cyclic number.

It is not a de Polignac number, because 1040402141 - 2¹⁴ = 1040385757 is a prime.

It is a super-2 number, since 2×1040402141² = 2164873229994767762, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1040402147) 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, 772286 + ... + 773631.

It is an arithmetic number, because the mean of its divisors is an integer number (260487183).

Almost surely, 2^1040402141 is an apocalyptic number.

It is an amenable number.

1040402141 is a deficient number, since it is larger than the sum of its proper divisors (1546591).

1040402141 is an equidigital number, since it uses as much as digits as its factorization.

1040402141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1546590.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 1040402141 is about 32255.2653221145. The cubic root of 1040402141 is about 1013.2899744716.

Adding to 1040402141 its reverse (1412040401), we get a palindrome (2452442542).

The spelling of 1040402141 in words is "one billion, forty million, four hundred two thousand, one hundred forty-one".