42003544440 has 128 divisors (see below), whose sum is σ = 148040524800. Its totient is φ = 9399390720.

The previous prime is 42003544423. The next prime is 42003544469. The reversal of 42003544440 is 4444530024.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 42003544398 and 42003544407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1206720 + ... + 1241039.

It is an arithmetic number, because the mean of its divisors is an integer number (1156566600).

Almost surely, 2^42003544440 is an apocalyptic number.

42003544440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42003544440 is an abundant number, since it is smaller than the sum of its proper divisors (106036980360).

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

42003544440 is a wasteful number, since it uses less digits than its factorization.

42003544440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2447797 (or 2447793 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 30.

The spelling of 42003544440 in words is "forty-two billion, three million, five hundred forty-four thousand, four hundred forty".