154120814 has 4 divisors (see below), whose sum is σ = 231181224. Its totient is φ = 77060406.

The previous prime is 154120801. The next prime is 154120817. The reversal of 154120814 is 418021451.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 418021451 = 19 ⋅22001129.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154120817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38530202 + ... + 38530205.

It is an arithmetic number, because the mean of its divisors is an integer number (57795306).

Almost surely, 2^154120814 is an apocalyptic number.

154120814 is a deficient number, since it is larger than the sum of its proper divisors (77060410).

154120814 is an equidigital number, since it uses as much as digits as its factorization.

154120814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77060409.

The product of its (nonzero) digits is 1280, while the sum is 26.

The square root of 154120814 is about 12414.5404264516. The cubic root of 154120814 is about 536.1509724534.

The spelling of 154120814 in words is "one hundred fifty-four million, one hundred twenty thousand, eight hundred fourteen".