1020004261 has 4 divisors (see below), whose sum is σ = 1020529024. Its totient is φ = 1019479500.

The previous prime is 1020004259. The next prime is 1020004277. The reversal of 1020004261 is 1624000201.

1020004261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1624000201 = 41 ⋅39609761.

It is a cyclic number.

It is not a de Polignac number, because 1020004261 - 2¹ = 1020004259 is a prime.

It is a super-2 number, since 2×1020004261² = 2080817384916312242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020004061) 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, 259455 + ... + 263356.

It is an arithmetic number, because the mean of its divisors is an integer number (255132256).

Almost surely, 2^1020004261 is an apocalyptic number.

It is an amenable number.

1020004261 is a deficient number, since it is larger than the sum of its proper divisors (524763).

1020004261 is an equidigital number, since it uses as much as digits as its factorization.

1020004261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524762.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1020004261 is about 31937.5055538156. The cubic root of 1020004261 is about 1006.6241112638.

Adding to 1020004261 its reverse (1624000201), we get a palindrome (2644004462).

The spelling of 1020004261 in words is "one billion, twenty million, four thousand, two hundred sixty-one".