40120333402 has 4 divisors (see below), whose sum is σ = 60180500106. Its totient is φ = 20060166700.

The previous prime is 40120333391. The next prime is 40120333423. The reversal of 40120333402 is 20433302104.

It is a happy number.

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., 39868508241 + 251825161 = 199671^2 + 15869^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10030083349 + ... + 10030083352.

Almost surely, 2^40120333402 is an apocalyptic number.

40120333402 is a deficient number, since it is larger than the sum of its proper divisors (20060166704).

40120333402 is a wasteful number, since it uses less digits than its factorization.

40120333402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20060166703.

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 40120333402 its reverse (20433302104), we get a palindrome (60553635506).

The spelling of 40120333402 in words is "forty billion, one hundred twenty million, three hundred thirty-three thousand, four hundred two".