61402242001 has 2 divisors, whose sum is σ = 61402242002. Its totient is φ = 61402242000.

The previous prime is 61402241987. The next prime is 61402242023. The reversal of 61402242001 is 10024220416.

It is a happy number.

It is an a-pointer prime, because the next prime (61402242023) can be obtained adding 61402242001 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58939700625 + 2462541376 = 242775^2 + 49624^2 .

It is a cyclic number.

It is not a de Polignac number, because 61402242001 - 2¹⁷ = 61402110929 is a prime.

It is not a weakly prime, because it can be changed into another prime (61402242061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30701121000 + 30701121001.

It is an arithmetic number, because the mean of its divisors is an integer number (30701121001).

Almost surely, 2^61402242001 is an apocalyptic number.

It is an amenable number.

61402242001 is a deficient number, since it is larger than the sum of its proper divisors (1).

61402242001 is an equidigital number, since it uses as much as digits as its factorization.

61402242001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 61402242001 its reverse (10024220416), we get a palindrome (71426462417).

The spelling of 61402242001 in words is "sixty-one billion, four hundred two million, two hundred forty-two thousand, one".