154144402 has 4 divisors (see below), whose sum is σ = 231216606. Its totient is φ = 77072200.

The previous prime is 154144343. The next prime is 154144409. The reversal of 154144402 is 204441451.

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., 110439081 + 43705321 = 10509^2 + 6611^2 .

It is not an unprimeable number, because it can be changed into a prime (154144409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38536099 + ... + 38536102.

Almost surely, 2^154144402 is an apocalyptic number.

154144402 is a deficient number, since it is larger than the sum of its proper divisors (77072204).

154144402 is an equidigital number, since it uses as much as digits as its factorization.

154144402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77072203.

The product of its (nonzero) digits is 2560, while the sum is 25.

The square root of 154144402 is about 12415.4904051350. The cubic root of 154144402 is about 536.1783234726.

Adding to 154144402 its reverse (204441451), we get a palindrome (358585853).

The spelling of 154144402 in words is "one hundred fifty-four million, one hundred forty-four thousand, four hundred two".