40702154 has 4 divisors (see below), whose sum is σ = 61053234. Its totient is φ = 20351076.

The previous prime is 40702147. The next prime is 40702159. The reversal of 40702154 is 45120704.

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., 40615129 + 87025 = 6373^2 + 295^2 .

It is not an unprimeable number, because it can be changed into a prime (40702159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10175537 + ... + 10175540.

Almost surely, 2^40702154 is an apocalyptic number.

40702154 is a deficient number, since it is larger than the sum of its proper divisors (20351080).

40702154 is a wasteful number, since it uses less digits than its factorization.

40702154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20351079.

The product of its (nonzero) digits is 1120, while the sum is 23.

The square root of 40702154 is about 6379.8239787631. The cubic root of 40702154 is about 343.9847038899.

Adding to 40702154 its reverse (45120704), we get a palindrome (85822858).

The spelling of 40702154 in words is "forty million, seven hundred two thousand, one hundred fifty-four".