42018470 has 72 divisors (see below), whose sum is σ = 87435936. Its totient is φ = 14524224.

The previous prime is 42018461. The next prime is 42018479. The reversal of 42018470 is 7481024.

It is an interprime number because it is at equal distance from previous prime (42018461) and next prime (42018479).

It is a super-2 number, since 2×42018470² = 3531103642281800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42018479) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 893987 + ... + 894033.

It is an arithmetic number, because the mean of its divisors is an integer number (1214388).

Almost surely, 2^42018470 is an apocalyptic number.

42018470 is an abundant number, since it is smaller than the sum of its proper divisors (45417466).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42018470 is a wasteful number, since it uses less digits than its factorization.

42018470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126 (or 90 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 26.

The square root of 42018470 is about 6482.1655332150. The cubic root of 42018470 is about 347.6536111579.

Adding to 42018470 its reverse (7481024), we get a palindrome (49499494).

The spelling of 42018470 in words is "forty-two million, eighteen thousand, four hundred seventy".