42542701 has 2 divisors, whose sum is σ = 42542702. Its totient is φ = 42542700.

The previous prime is 42542699. The next prime is 42542713. The reversal of 42542701 is 10724524.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33698025 + 8844676 = 5805^2 + 2974^2 .

It is a cyclic number.

It is not a de Polignac number, because 42542701 - 2¹ = 42542699 is a prime.

Together with 42542699, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42543701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21271350 + 21271351.

It is an arithmetic number, because the mean of its divisors is an integer number (21271351).

Almost surely, 2^42542701 is an apocalyptic number.

It is an amenable number.

42542701 is a deficient number, since it is larger than the sum of its proper divisors (1).

42542701 is an equidigital number, since it uses as much as digits as its factorization.

42542701 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 42542701 is about 6522.4766001880. The cubic root of 42542701 is about 349.0934389099.

The spelling of 42542701 in words is "forty-two million, five hundred forty-two thousand, seven hundred one".