1055402140 has 48 divisors (see below), whose sum is σ = 2391348960. Its totient is φ = 388949760.

The previous prime is 1055402137. The next prime is 1055402141. The reversal of 1055402140 is 412045501.

1055402140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1055402140² = 2227747354233159200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1055402141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 144906 + ... + 152014.

It is an arithmetic number, because the mean of its divisors is an integer number (49819770).

Almost surely, 2^1055402140 is an apocalyptic number.

1055402140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1055402140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1195674480).

1055402140 is an abundant number, since it is smaller than the sum of its proper divisors (1335946820).

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

1055402140 is a wasteful number, since it uses less digits than its factorization.

1055402140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7702 (or 7700 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 1055402140 is about 32486.9533813191. The cubic root of 1055402140 is about 1018.1364602601.

Adding to 1055402140 its reverse (412045501), we get a palindrome (1467447641).

The spelling of 1055402140 in words is "one billion, fifty-five million, four hundred two thousand, one hundred forty".