42154342545 has 48 divisors (see below), whose sum is σ = 78499145088. Its totient is φ = 19260622080.

The previous prime is 42154342543. The next prime is 42154342561. The reversal of 42154342545 is 54524345124.

It is not a de Polignac number, because 42154342545 - 2¹ = 42154342543 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42154342541) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1520205 + ... + 1547685.

It is an arithmetic number, because the mean of its divisors is an integer number (1635398856).

Almost surely, 2^42154342545 is an apocalyptic number.

It is an amenable number.

42154342545 is a deficient number, since it is larger than the sum of its proper divisors (36344802543).

42154342545 is a wasteful number, since it uses less digits than its factorization.

42154342545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29590 (or 29583 counting only the distinct ones).

The product of its digits is 384000, while the sum is 39.

Adding to 42154342545 its reverse (54524345124), we get a palindrome (96678687669).

The spelling of 42154342545 in words is "forty-two billion, one hundred fifty-four million, three hundred forty-two thousand, five hundred forty-five".