1201000043 has 2 divisors, whose sum is σ = 1201000044. Its totient is φ = 1201000042.

The previous prime is 1201000027. The next prime is 1201000061. The reversal of 1201000043 is 3400001021.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1201000043 - 2⁴ = 1201000027 is a prime.

It is a super-2 number, since 2×1201000043² = 2884802206572003698, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1200999988 and 1201000033.

It is not a weakly prime, because it can be changed into another prime (1201000063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600500021 + 600500022.

It is an arithmetic number, because the mean of its divisors is an integer number (600500022).

Almost surely, 2^1201000043 is an apocalyptic number.

1201000043 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201000043 is an equidigital number, since it uses as much as digits as its factorization.

1201000043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 1201000043 is about 34655.4475227200. The cubic root of 1201000043 is about 1062.9536828470.

Adding to 1201000043 its reverse (3400001021), we get a palindrome (4601001064).

The spelling of 1201000043 in words is "one billion, two hundred one million, forty-three", and thus it is an aban number.