2145535542 has 24 divisors (see below), whose sum is σ = 4850776944. Its totient is φ = 684083664.

The previous prime is 2145535523. The next prime is 2145535543. The reversal of 2145535542 is 2455355412.

2145535542 is a `hidden beast` number, since 2 + 14 + 553 + 55 + 42 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 2145535497 and 2145535506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145535543) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2590813 + ... + 2591640.

It is an arithmetic number, because the mean of its divisors is an integer number (202115706).

Almost surely, 2^2145535542 is an apocalyptic number.

2145535542 is an abundant number, since it is smaller than the sum of its proper divisors (2705241402).

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

2145535542 is a wasteful number, since it uses less digits than its factorization.

2145535542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5182484 (or 5182481 counting only the distinct ones).

The product of its digits is 120000, while the sum is 36.

The square root of 2145535542 is about 46319.9259714434. The cubic root of 2145535542 is about 1289.7689111925.

The spelling of 2145535542 in words is "two billion, one hundred forty-five million, five hundred thirty-five thousand, five hundred forty-two".