40429402 has 8 divisors (see below), whose sum is σ = 65309076. Its totient is φ = 18659712.

The previous prime is 40429399. The next prime is 40429409. The reversal of 40429402 is 20492404.

It can be written as a sum of positive squares in 2 ways, for example, as 31483321 + 8946081 = 5611^2 + 2991^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (40429409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 777463 + ... + 777514.

Almost surely, 2^40429402 is an apocalyptic number.

40429402 is a deficient number, since it is larger than the sum of its proper divisors (24879674).

40429402 is a wasteful number, since it uses less digits than its factorization.

40429402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1554992.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 40429402 is about 6358.4119086451. The cubic root of 40429402 is about 343.2146146445.

The spelling of 40429402 in words is "forty million, four hundred twenty-nine thousand, four hundred two".