42154262141 has 2 divisors, whose sum is σ = 42154262142. Its totient is φ = 42154262140.

The previous prime is 42154262131. The next prime is 42154262159. The reversal of 42154262141 is 14126245124.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40222308025 + 1931954116 = 200555^2 + 43954^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42154262141 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42154262098 and 42154262107.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42154262131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21077131070 + 21077131071.

It is an arithmetic number, because the mean of its divisors is an integer number (21077131071).

Almost surely, 2^42154262141 is an apocalyptic number.

It is an amenable number.

42154262141 is a deficient number, since it is larger than the sum of its proper divisors (1).

42154262141 is an equidigital number, since it uses as much as digits as its factorization.

42154262141 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15360, while the sum is 32.

The spelling of 42154262141 in words is "forty-two billion, one hundred fifty-four million, two hundred sixty-two thousand, one hundred forty-one".