40303402 has 4 divisors (see below), whose sum is σ = 60455106. Its totient is φ = 20151700.

The previous prime is 40303357. The next prime is 40303409. The reversal of 40303402 is 20430304.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 40081561 + 221841 = 6331^2 + 471^2 .

It is not an unprimeable number, because it can be changed into a prime (40303409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10075849 + ... + 10075852.

Almost surely, 2^40303402 is an apocalyptic number.

40303402 is a deficient number, since it is larger than the sum of its proper divisors (20151704).

40303402 is a wasteful number, since it uses less digits than its factorization.

40303402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20151703.

The product of its (nonzero) digits is 288, while the sum is 16.

The square root of 40303402 is about 6348.4960423710. The cubic root of 40303402 is about 342.8576958159.

Adding to 40303402 its reverse (20430304), we get a palindrome (60733706).

The spelling of 40303402 in words is "forty million, three hundred three thousand, four hundred two".