1020437505 has 12 divisors (see below), whose sum is σ = 1768758420. Its totient is φ = 544233312.

The previous prime is 1020437459. The next prime is 1020437557. The reversal of 1020437505 is 5057340201.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 258180624 + 762256881 = 16068^2 + 27609^2 .

It is not a de Polignac number, because 1020437505 - 2¹⁰ = 1020436481 is a prime.

It is a super-2 number, since 2×1020437505² = 2082585403221250050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11338150 + ... + 11338239.

It is an arithmetic number, because the mean of its divisors is an integer number (147396535).

Almost surely, 2^1020437505 is an apocalyptic number.

1020437505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1020437505 is a deficient number, since it is larger than the sum of its proper divisors (748320915).

1020437505 is a wasteful number, since it uses less digits than its factorization.

1020437505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22676400 (or 22676397 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 1020437505 is about 31944.2875174889. The cubic root of 1020437505 is about 1006.7666113630.

Adding to 1020437505 its reverse (5057340201), we get a palindrome (6077777706).

The spelling of 1020437505 in words is "one billion, twenty million, four hundred thirty-seven thousand, five hundred five".