40201434 has 128 divisors (see below), whose sum is σ = 112412160. Its totient is φ = 10497600.

The previous prime is 40201429. The next prime is 40201439. The reversal of 40201434 is 43410204.

It is an interprime number because it is at equal distance from previous prime (40201429) and next prime (40201439).

It is a hoax number, since the sum of its digits (18) coincides with the sum of the digits of its distinct prime factors.

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

It is not an unprimeable number, because it can be changed into a prime (40201439) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 397984 + ... + 398084.

It is an arithmetic number, because the mean of its divisors is an integer number (878220).

Almost surely, 2^40201434 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40201434, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56206080).

40201434 is an abundant number, since it is smaller than the sum of its proper divisors (72210726).

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

40201434 is a wasteful number, since it uses less digits than its factorization.

40201434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144 (or 126 counting only the distinct ones).

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

The square root of 40201434 is about 6340.4600779439. The cubic root of 40201434 is about 342.5683071888.

Adding to 40201434 its reverse (43410204), we get a palindrome (83611638).

The spelling of 40201434 in words is "forty million, two hundred one thousand, four hundred thirty-four".