1012420205 has 8 divisors (see below), whose sum is σ = 1215079704. Its totient is φ = 809819200.

The previous prime is 1012420153. The next prime is 1012420217. The reversal of 1012420205 is 5020242101.

It can be written as a sum of positive squares in 4 ways, for example, as 737556964 + 274863241 = 27158^2 + 16579^2 .

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

It is not a de Polignac number, because 1012420205 - 2⁸ = 1012419949 is a prime.

It is a Duffinian number.

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, 47315 + ... + 65295.

It is an arithmetic number, because the mean of its divisors is an integer number (151884963).

Almost surely, 2^1012420205 is an apocalyptic number.

It is an amenable number.

1012420205 is a deficient number, since it is larger than the sum of its proper divisors (202659499).

1012420205 is a wasteful number, since it uses less digits than its factorization.

1012420205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29247.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 1012420205 is about 31818.5512712317. The cubic root of 1012420205 is about 1004.1230454662.

Adding to 1012420205 its reverse (5020242101), we get a palindrome (6032662306).

The spelling of 1012420205 in words is "one billion, twelve million, four hundred twenty thousand, two hundred five".