1012021043 has 8 divisors (see below), whose sum is σ = 1104517056. Its totient is φ = 919607400.

The previous prime is 1012021027. The next prime is 1012021069. The reversal of 1012021043 is 3401202101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1012021043 - 2⁴ = 1012021027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1012021093) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6680 + ... + 45482.

It is an arithmetic number, because the mean of its divisors is an integer number (138064632).

Almost surely, 2^1012021043 is an apocalyptic number.

1012021043 is a deficient number, since it is larger than the sum of its proper divisors (92496013).

1012021043 is a wasteful number, since it uses less digits than its factorization.

1012021043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41185.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1012021043 is about 31812.2781799732. The cubic root of 1012021043 is about 1003.9910645464.

Adding to 1012021043 its reverse (3401202101), we get a palindrome (4413223144).

The spelling of 1012021043 in words is "one billion, twelve million, twenty-one thousand, forty-three".