1055142400440 has 32 divisors (see below), whose sum is σ = 3165427201680. Its totient is φ = 281371306752.

The previous prime is 1055142400439. The next prime is 1055142400447. The reversal of 1055142400440 is 440042415501.

It is a super-2 number, since 2×1055142400440² (a number of 25 digits) contains 22 as substring.

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 = 1055142400398 and 1055142400407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1055142400447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4396426549 + ... + 4396426788.

Almost surely, 2^{1055142400440} is an apocalyptic number.

1055142400440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1055142400440 is an abundant number, since it is smaller than the sum of its proper divisors (2110284801240).

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

1055142400440 is a wasteful number, since it uses less digits than its factorization.

1055142400440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8792853351 (or 8792853347 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 30.

Adding to 1055142400440 its reverse (440042415501), we get a palindrome (1495184815941).

The spelling of 1055142400440 in words is "one trillion, fifty-five billion, one hundred forty-two million, four hundred thousand, four hundred forty".