42200123461 has 2 divisors, whose sum is σ = 42200123462. Its totient is φ = 42200123460.

The previous prime is 42200123437. The next prime is 42200123477. The reversal of 42200123461 is 16432100224.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24114984100 + 18085139361 = 155290^2 + 134481^2 .

It is a cyclic number.

It is not a de Polignac number, because 42200123461 - 2¹¹ = 42200121413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42200123431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21100061730 + 21100061731.

It is an arithmetic number, because the mean of its divisors is an integer number (21100061731).

Almost surely, 2^42200123461 is an apocalyptic number.

It is an amenable number.

42200123461 is a deficient number, since it is larger than the sum of its proper divisors (1).

42200123461 is an equidigital number, since it uses as much as digits as its factorization.

42200123461 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 42200123461 its reverse (16432100224), we get a palindrome (58632223685).

The spelling of 42200123461 in words is "forty-two billion, two hundred million, one hundred twenty-three thousand, four hundred sixty-one".