90042701101 has 2 divisors, whose sum is σ = 90042701102. Its totient is φ = 90042701100.

The previous prime is 90042701087. The next prime is 90042701183. The reversal of 90042701101 is 10110724009.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88506845001 + 1535856100 = 297501^2 + 39190^2 .

It is an emirp because it is prime and its reverse (10110724009) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 90042701101 - 2¹⁹ = 90042176813 is a prime.

It is a super-2 number, since 2×90042701101² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90042701501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45021350550 + 45021350551.

It is an arithmetic number, because the mean of its divisors is an integer number (45021350551).

Almost surely, 2^90042701101 is an apocalyptic number.

It is an amenable number.

90042701101 is a deficient number, since it is larger than the sum of its proper divisors (1).

90042701101 is an equidigital number, since it uses as much as digits as its factorization.

90042701101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 25.

The spelling of 90042701101 in words is "ninety billion, forty-two million, seven hundred one thousand, one hundred one".