42148429 has 2 divisors, whose sum is σ = 42148430. Its totient is φ = 42148428.

The previous prime is 42148391. The next prime is 42148433. The reversal of 42148429 is 92484124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33327529 + 8820900 = 5773^2 + 2970^2 .

It is a cyclic number.

It is not a de Polignac number, because 42148429 - 2¹³ = 42140237 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42148394 and 42148403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42148459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21074214 + 21074215.

It is an arithmetic number, because the mean of its divisors is an integer number (21074215).

Almost surely, 2^42148429 is an apocalyptic number.

It is an amenable number.

42148429 is a deficient number, since it is larger than the sum of its proper divisors (1).

42148429 is an equidigital number, since it uses as much as digits as its factorization.

42148429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18432, while the sum is 34.

The square root of 42148429 is about 6492.1821447030. The cubic root of 42148429 is about 348.0116617618.

It can be divided in two parts, 4214 and 8429, that multiplied together give a triangular number (35519806 = T₈₄₂₈).

The spelling of 42148429 in words is "forty-two million, one hundred forty-eight thousand, four hundred twenty-nine".