29942140 has 12 divisors (see below), whose sum is σ = 62878536. Its totient is φ = 11976848.

The previous prime is 29942111. The next prime is 29942141. The reversal of 29942140 is 4124992.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29942141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 748534 + ... + 748573.

It is an arithmetic number, because the mean of its divisors is an integer number (5239878).

Almost surely, 2^29942140 is an apocalyptic number.

29942140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

29942140 is an abundant number, since it is smaller than the sum of its proper divisors (32936396).

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

29942140 is a wasteful number, since it uses less digits than its factorization.

29942140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1497116 (or 1497114 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 29942140 is about 5471.9411546544. The cubic root of 29942140 is about 310.5233615085.

The spelling of 29942140 in words is "twenty-nine million, nine hundred forty-two thousand, one hundred forty".