42380031 has 8 divisors (see below), whose sum is σ = 59830704. Its totient is φ = 26591360.

The previous prime is 42380029. The next prime is 42380057. The reversal of 42380031 is 13008324.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42380031 - 2¹ = 42380029 is a prime.

It is a super-2 number, since 2×42380031² = 3592134055121922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42380011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 415440 + ... + 415541.

It is an arithmetic number, because the mean of its divisors is an integer number (7478838).

Almost surely, 2^42380031 is an apocalyptic number.

42380031 is a deficient number, since it is larger than the sum of its proper divisors (17450673).

42380031 is a wasteful number, since it uses less digits than its factorization.

42380031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 831001.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 42380031 is about 6509.9947004587. The cubic root of 42380031 is about 348.6479291739.

Adding to 42380031 its reverse (13008324), we get a palindrome (55388355).

The spelling of 42380031 in words is "forty-two million, three hundred eighty thousand, thirty-one".