154643642 has 16 divisors (see below), whose sum is σ = 234329760. Its totient is φ = 76537872.

The previous prime is 154643633. The next prime is 154643647. The reversal of 154643642 is 246346451.

It is a super-2 number, since 2×154643642² = 47829312022048328, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (154643647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94709 + ... + 96327.

It is an arithmetic number, because the mean of its divisors is an integer number (14645610).

Almost surely, 2^154643642 is an apocalyptic number.

154643642 is a deficient number, since it is larger than the sum of its proper divisors (79686118).

154643642 is a wasteful number, since it uses less digits than its factorization.

154643642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2077.

The product of its digits is 69120, while the sum is 35.

The square root of 154643642 is about 12435.5796808995. The cubic root of 154643642 is about 536.7565544347.

The spelling of 154643642 in words is "one hundred fifty-four million, six hundred forty-three thousand, six hundred forty-two".