42001345632631 has 32 divisors (see below), whose sum is σ = 52906616179200. Its totient is φ = 32390025984000.

The previous prime is 42001345632541. The next prime is 42001345632643. The reversal of 42001345632631 is 13623654310024.

It is a cyclic number.

It is not a de Polignac number, because 42001345632631 - 2³¹ = 41999198148983 is a prime.

It is a super-2 number, since 2×42001345632631² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42001345632691) 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, 438374931 + ... + 438470731.

It is an arithmetic number, because the mean of its divisors is an integer number (1653331755600).

Almost surely, 2^{42001345632631} is an apocalyptic number.

42001345632631 is a deficient number, since it is larger than the sum of its proper divisors (10905270546569).

42001345632631 is a wasteful number, since it uses less digits than its factorization.

42001345632631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154615.

The product of its (nonzero) digits is 311040, while the sum is 40.

Adding to 42001345632631 its reverse (13623654310024), we get a palindrome (55624999942655).

The spelling of 42001345632631 in words is "forty-two trillion, one billion, three hundred forty-five million, six hundred thirty-two thousand, six hundred thirty-one".