1055004420 has 24 divisors (see below), whose sum is σ = 2954012544. Its totient is φ = 281334496.

The previous prime is 1055004397. The next prime is 1055004539. The reversal of 1055004420 is 244005501.

It is a super-2 number, since 2×1055004420² = 2226068652439072800, which contains 22 as substring.

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, 8791644 + ... + 8791763.

It is an arithmetic number, because the mean of its divisors is an integer number (123083856).

Almost surely, 2^1055004420 is an apocalyptic number.

1055004420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1055004420 is an abundant number, since it is smaller than the sum of its proper divisors (1899008124).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1055004420 is a wasteful number, since it uses less digits than its factorization.

1055004420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17583419 (or 17583417 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 1055004420 is about 32480.8315780246. The cubic root of 1055004420 is about 1018.0085519511.

Adding to 1055004420 its reverse (244005501), we get a palindrome (1299009921).

The spelling of 1055004420 in words is "one billion, fifty-five million, four thousand, four hundred twenty".