1011420655 has 24 divisors (see below), whose sum is σ = 1397781792. Its totient is φ = 688223424.

The previous prime is 1011420629. The next prime is 1011420667. The reversal of 1011420655 is 5560241101.

It is a happy number.

It is not a de Polignac number, because 1011420655 - 2⁹ = 1011420143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2640594 + ... + 2640976.

It is an arithmetic number, because the mean of its divisors is an integer number (58240908).

Almost surely, 2^1011420655 is an apocalyptic number.

1011420655 is a deficient number, since it is larger than the sum of its proper divisors (386361137).

1011420655 is an frugal number, since it uses more digits than its factorization.

1011420655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 975 (or 592 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 1011420655 is about 31802.8403605716. The cubic root of 1011420655 is about 1003.7924838836.

Adding to 1011420655 its reverse (5560241101), we get a palindrome (6571661756).

The spelling of 1011420655 in words is "one billion, eleven million, four hundred twenty thousand, six hundred fifty-five".