40542433154 has 4 divisors (see below), whose sum is σ = 60813649734. Its totient is φ = 20271216576.

The previous prime is 40542433093. The next prime is 40542433189. The reversal of 40542433154 is 45133424504.

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., 30320212129 + 10222221025 = 174127^2 + 101105^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10135608287 + ... + 10135608290.

Almost surely, 2^40542433154 is an apocalyptic number.

40542433154 is a deficient number, since it is larger than the sum of its proper divisors (20271216580).

40542433154 is a wasteful number, since it uses less digits than its factorization.

40542433154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20271216579.

The product of its (nonzero) digits is 115200, while the sum is 35.

Adding to 40542433154 its reverse (45133424504), we get a palindrome (85675857658).

The spelling of 40542433154 in words is "forty billion, five hundred forty-two million, four hundred thirty-three thousand, one hundred fifty-four".