145820104 has 8 divisors (see below), whose sum is σ = 273412710. Its totient is φ = 72910048.

The previous prime is 145820099. The next prime is 145820107. The reversal of 145820104 is 401028541.

It can be written as a sum of positive squares in only one way, i.e., 132204004 + 13616100 = 11498^2 + 3690^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (145820107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9113749 + ... + 9113764.

Almost surely, 2^145820104 is an apocalyptic number.

It is an amenable number.

145820104 is a deficient number, since it is larger than the sum of its proper divisors (127592606).

145820104 is a wasteful number, since it uses less digits than its factorization.

145820104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18227519 (or 18227515 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 25.

The square root of 145820104 is about 12075.5995296300. The cubic root of 145820104 is about 526.3473828993.

Adding to 145820104 its reverse (401028541), we get a palindrome (546848645).

It can be divided in two parts, 145820 and 104, that added together give a square (145924 = 382²).

The spelling of 145820104 in words is "one hundred forty-five million, eight hundred twenty thousand, one hundred four".