42900149 has 2 divisors, whose sum is σ = 42900150. Its totient is φ = 42900148.

The previous prime is 42900107. The next prime is 42900223. The reversal of 42900149 is 94100924.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27352900 + 15547249 = 5230^2 + 3943^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42900149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42900349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21450074 + 21450075.

It is an arithmetic number, because the mean of its divisors is an integer number (21450075).

Almost surely, 2^42900149 is an apocalyptic number.

It is an amenable number.

42900149 is a deficient number, since it is larger than the sum of its proper divisors (1).

42900149 is an equidigital number, since it uses as much as digits as its factorization.

42900149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 42900149 is about 6549.8205318925. The cubic root of 42900149 is about 350.0684192773.

It can be divided in two parts, 42900 and 149, that multiplied together give a triangular number (6392100 = T₃₅₇₅).

The spelling of 42900149 in words is "forty-two million, nine hundred thousand, one hundred forty-nine".