145404002 has 4 divisors (see below), whose sum is σ = 218106006. Its totient is φ = 72702000.

The previous prime is 145404001. The next prime is 145404013. The reversal of 145404002 is 200404541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 200404541 = 229 ⋅875129.

It can be written as a sum of positive squares in only one way, i.e., 116877721 + 28526281 = 10811^2 + 5341^2 .

It is a super-2 number, since 2×145404002² = 42284647595232008, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145404001) 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, 36350999 + ... + 36351002.

Almost surely, 2^145404002 is an apocalyptic number.

145404002 is a deficient number, since it is larger than the sum of its proper divisors (72702004).

145404002 is an equidigital number, since it uses as much as digits as its factorization.

145404002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72702003.

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 145404002 is about 12058.3581801172. The cubic root of 145404002 is about 525.8462566376.

Adding to 145404002 its reverse (200404541), we get a palindrome (345808543).

The spelling of 145404002 in words is "one hundred forty-five million, four hundred four thousand, two".