1055729840 has 60 divisors (see below), whose sum is σ = 2698025232. Its totient is φ = 383898240.

The previous prime is 1055729827. The next prime is 1055729863. The reversal of 1055729840 is 489275501.

It is a super-2 number, since 2×1055729840² = 2229130990132851200, 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, 44852 + ... + 64211.

Almost surely, 2^1055729840 is an apocalyptic number.

1055729840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1055729840 is an abundant number, since it is smaller than the sum of its proper divisors (1642295392).

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

1055729840 is a wasteful number, since it uses less digits than its factorization.

1055729840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109098 (or 109081 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 41.

The square root of 1055729840 is about 32491.9965529975. The cubic root of 1055729840 is about 1018.2418257189.

The spelling of 1055729840 in words is "one billion, fifty-five million, seven hundred twenty-nine thousand, eight hundred forty".