40342512 has 40 divisors (see below), whose sum is σ = 119107456. Its totient is φ = 11526336.

The previous prime is 40342481. The next prime is 40342537. The reversal of 40342512 is 21524304.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59698 + ... + 60369.

Almost surely, 2^40342512 is an apocalyptic number.

40342512 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

40342512 is an abundant number, since it is smaller than the sum of its proper divisors (78764944).

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

40342512 is a wasteful number, since it uses less digits than its factorization.

40342512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120085 (or 120079 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 40342512 is about 6351.5755525696. The cubic root of 40342512 is about 342.9685618039.

Adding to 40342512 its reverse (21524304), we get a palindrome (61866816).

The spelling of 40342512 in words is "forty million, three hundred forty-two thousand, five hundred twelve".