2153456041042 has 4 divisors (see below), whose sum is σ = 3230184061566. Its totient is φ = 1076728020520.

The previous prime is 2153456041031. The next prime is 2153456041043. The reversal of 2153456041042 is 2401406543512.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2042101018441 + 111355022601 = 1429021^2 + 333699^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2153456040992 and 2153456041010.

It is not an unprimeable number, because it can be changed into a prime (2153456041043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 538364010259 + ... + 538364010262.

Almost surely, 2^{2153456041042} is an apocalyptic number.

2153456041042 is a deficient number, since it is larger than the sum of its proper divisors (1076728020524).

2153456041042 is a wasteful number, since it uses less digits than its factorization.

2153456041042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1076728020523.

The product of its (nonzero) digits is 115200, while the sum is 37.

The spelling of 2153456041042 in words is "two trillion, one hundred fifty-three billion, four hundred fifty-six million, forty-one thousand, forty-two".