120420436 has 6 divisors (see below), whose sum is σ = 210735770. Its totient is φ = 60210216.

The previous prime is 120420361. The next prime is 120420437. The reversal of 120420436 is 634024021.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 110460100 + 9960336 = 10510^2 + 3156^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120420437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15052551 + ... + 15052558.

Almost surely, 2^120420436 is an apocalyptic number.

It is an amenable number.

120420436 is a deficient number, since it is larger than the sum of its proper divisors (90315334).

120420436 is a wasteful number, since it uses less digits than its factorization.

120420436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30105113 (or 30105111 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 120420436 is about 10973.6245607365. The cubic root of 120420436 is about 493.8177902756.

Adding to 120420436 its reverse (634024021), we get a palindrome (754444457).

The spelling of 120420436 in words is "one hundred twenty million, four hundred twenty thousand, four hundred thirty-six".