1040400430 has 16 divisors (see below), whose sum is σ = 1878032304. Its totient is φ = 414979840.

The previous prime is 1040400401. The next prime is 1040400467. The reversal of 1040400430 is 340040401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143836 + ... + 150895.

It is an arithmetic number, because the mean of its divisors is an integer number (117377019).

Almost surely, 2^1040400430 is an apocalyptic number.

1040400430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1040400430 is a deficient number, since it is larger than the sum of its proper divisors (837631874).

1040400430 is a wasteful number, since it uses less digits than its factorization.

1040400430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295091.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 1040400430 is about 32255.2387993020. The cubic root of 1040400430 is about 1013.2894190005.

Adding to 1040400430 its reverse (340040401), we get a palindrome (1380440831).

The spelling of 1040400430 in words is "one billion, forty million, four hundred thousand, four hundred thirty".