1030400043 has 4 divisors (see below), whose sum is σ = 1373866728. Its totient is φ = 686933360.

The previous prime is 1030400017. The next prime is 1030400047. The reversal of 1030400043 is 3400040301.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1030400043 - 2⁵ = 1030400011 is a prime.

It is a super-2 number, since 2×1030400043² = 2123448497228803698, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1030399995 and 1030400031.

It is not an unprimeable number, because it can be changed into a prime (1030400047) 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, 171733338 + ... + 171733343.

It is an arithmetic number, because the mean of its divisors is an integer number (343466682).

Almost surely, 2^1030400043 is an apocalyptic number.

1030400043 is a deficient number, since it is larger than the sum of its proper divisors (343466685).

1030400043 is an equidigital number, since it uses as much as digits as its factorization.

1030400043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343466684.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 1030400043 is about 32099.8449061674. The cubic root of 1030400043 is about 1010.0323627835.

Adding to 1030400043 its reverse (3400040301), we get a palindrome (4430440344).

The spelling of 1030400043 in words is "one billion, thirty million, four hundred thousand, forty-three".