40420134 has 32 divisors (see below), whose sum is σ = 90941280. Its totient is φ = 13471920.

The previous prime is 40420123. The next prime is 40420147. The reversal of 40420134 is 43102404.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 247 + ... + 8994.

It is an arithmetic number, because the mean of its divisors is an integer number (2841915).

Almost surely, 2^40420134 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40420134, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45470640).

40420134 is an abundant number, since it is smaller than the sum of its proper divisors (50521146).

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

40420134 is an frugal number, since it uses more digits than its factorization.

40420134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9264 (or 9246 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 40420134 is about 6357.6830685400. The cubic root of 40420134 is about 343.1883865697.

Adding to 40420134 its reverse (43102404), we get a palindrome (83522538).

The spelling of 40420134 in words is "forty million, four hundred twenty thousand, one hundred thirty-four".