42451423041405 has 32 divisors (see below), whose sum is σ = 78350930878464. Its totient is φ = 19224996918336.

The previous prime is 42451423041397. The next prime is 42451423041407. The reversal of 42451423041405 is 50414032415424.

It is not a de Polignac number, because 42451423041405 - 2³ = 42451423041397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42451423041407) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1889237677 + ... + 1889260146.

It is an arithmetic number, because the mean of its divisors is an integer number (2448466589952).

Almost surely, 2^{42451423041405} is an apocalyptic number.

It is an amenable number.

42451423041405 is a deficient number, since it is larger than the sum of its proper divisors (35899507837059).

42451423041405 is a wasteful number, since it uses less digits than its factorization.

42451423041405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3778497945.

The product of its (nonzero) digits is 307200, while the sum is 39.

Adding to 42451423041405 its reverse (50414032415424), we get a palindrome (92865455456829).

The spelling of 42451423041405 in words is "forty-two trillion, four hundred fifty-one billion, four hundred twenty-three million, forty-one thousand, four hundred five".