42450587 has 2 divisors, whose sum is σ = 42450588. Its totient is φ = 42450586.

The previous prime is 42450557. The next prime is 42450593. The reversal of 42450587 is 78505424.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42450587 is a prime.

It is not a weakly prime, because it can be changed into another prime (42450517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21225293 + 21225294.

It is an arithmetic number, because the mean of its divisors is an integer number (21225294).

Almost surely, 2^42450587 is an apocalyptic number.

42450587 is a deficient number, since it is larger than the sum of its proper divisors (1).

42450587 is an equidigital number, since it uses as much as digits as its factorization.

42450587 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 44800, while the sum is 35.

The square root of 42450587 is about 6515.4114989001. The cubic root of 42450587 is about 348.8413029876.

The spelling of 42450587 in words is "forty-two million, four hundred fifty thousand, five hundred eighty-seven".