42387069 has 16 divisors (see below), whose sum is σ = 59971968. Its totient is φ = 26537472.

The previous prime is 42387053. The next prime is 42387101. The reversal of 42387069 is 96078324.

It is not a de Polignac number, because 42387069 - 2⁴ = 42387053 is a prime.

It is a super-2 number, since 2×42387069² = 3593327236821522, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42387469) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44769 + ... + 45705.

It is an arithmetic number, because the mean of its divisors is an integer number (3748248).

Almost surely, 2^42387069 is an apocalyptic number.

It is an amenable number.

42387069 is a deficient number, since it is larger than the sum of its proper divisors (17584899).

42387069 is a wasteful number, since it uses less digits than its factorization.

42387069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1844.

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 42387069 is about 6510.5352314537. The cubic root of 42387069 is about 348.6672279510.

The spelling of 42387069 in words is "forty-two million, three hundred eighty-seven thousand, sixty-nine".