42330155477 has 2 divisors, whose sum is σ = 42330155478. Its totient is φ = 42330155476.

The previous prime is 42330155467. The next prime is 42330155507. The reversal of 42330155477 is 77455103324.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27622772401 + 14707383076 = 166201^2 + 121274^2 .

It is a cyclic number.

It is not a de Polignac number, because 42330155477 - 2²⁰ = 42329106901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42330155467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21165077738 + 21165077739.

It is an arithmetic number, because the mean of its divisors is an integer number (21165077739).

Almost surely, 2^42330155477 is an apocalyptic number.

It is an amenable number.

42330155477 is a deficient number, since it is larger than the sum of its proper divisors (1).

42330155477 is an equidigital number, since it uses as much as digits as its factorization.

42330155477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 352800, while the sum is 41.

The spelling of 42330155477 in words is "forty-two billion, three hundred thirty million, one hundred fifty-five thousand, four hundred seventy-seven".