154637642 has 8 divisors (see below), whose sum is σ = 232319136. Its totient is φ = 77197932.

The previous prime is 154637617. The next prime is 154637647. The reversal of 154637642 is 246736451.

It is a happy number.

154637642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 154637596 and 154637605.

It is not an unprimeable number, because it can be changed into a prime (154637647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58838 + ... + 61409.

It is an arithmetic number, because the mean of its divisors is an integer number (29039892).

Almost surely, 2^154637642 is an apocalyptic number.

154637642 is a deficient number, since it is larger than the sum of its proper divisors (77681494).

154637642 is a wasteful number, since it uses less digits than its factorization.

154637642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120892.

The product of its digits is 120960, while the sum is 38.

The square root of 154637642 is about 12435.3384352819. The cubic root of 154637642 is about 536.7496124940.

The spelling of 154637642 in words is "one hundred fifty-four million, six hundred thirty-seven thousand, six hundred forty-two".