42546629 has 2 divisors, whose sum is σ = 42546630. Its totient is φ = 42546628.

The previous prime is 42546599. The next prime is 42546641. The reversal of 42546629 is 92664524.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39564100 + 2982529 = 6290^2 + 1727^2 .

It is a cyclic number.

It is not a de Polignac number, because 42546629 - 2⁸ = 42546373 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42546592 and 42546601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42576629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21273314 + 21273315.

It is an arithmetic number, because the mean of its divisors is an integer number (21273315).

Almost surely, 2^42546629 is an apocalyptic number.

It is an amenable number.

42546629 is a deficient number, since it is larger than the sum of its proper divisors (1).

42546629 is an equidigital number, since it uses as much as digits as its factorization.

42546629 is an evil number, because the sum of its binary digits is even.

The product of its digits is 103680, while the sum is 38.

The square root of 42546629 is about 6522.7777058551. Note that the first 4 decimals coincide. The cubic root of 42546629 is about 349.1041826004.

The spelling of 42546629 in words is "forty-two million, five hundred forty-six thousand, six hundred twenty-nine".