42149377 has 2 divisors, whose sum is σ = 42149378. Its totient is φ = 42149376.

The previous prime is 42149369. The next prime is 42149389. The reversal of 42149377 is 77394124.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32901696 + 9247681 = 5736^2 + 3041^2 .

It is a cyclic number.

It is not a de Polignac number, because 42149377 - 2³ = 42149369 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42149347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21074688 + 21074689.

It is an arithmetic number, because the mean of its divisors is an integer number (21074689).

Almost surely, 2^42149377 is an apocalyptic number.

It is an amenable number.

42149377 is a deficient number, since it is larger than the sum of its proper divisors (1).

42149377 is an equidigital number, since it uses as much as digits as its factorization.

42149377 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42336, while the sum is 37.

The square root of 42149377 is about 6492.2551551830. The cubic root of 42149377 is about 348.0142708949.

The spelling of 42149377 in words is "forty-two million, one hundred forty-nine thousand, three hundred seventy-seven".