154942947 has 12 divisors (see below), whose sum is σ = 236971800. Its totient is φ = 97219008.

The previous prime is 154942933. The next prime is 154942951. The reversal of 154942947 is 749249451.

It is not a de Polignac number, because 154942947 - 2⁷ = 154942819 is a prime.

It is not an unprimeable number, because it can be changed into a prime (154942847) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 506197 + ... + 506502.

It is an arithmetic number, because the mean of its divisors is an integer number (19747650).

Almost surely, 2^154942947 is an apocalyptic number.

154942947 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

154942947 is a deficient number, since it is larger than the sum of its proper divisors (82028853).

154942947 is a wasteful number, since it uses less digits than its factorization.

154942947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1012722 (or 1012719 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 154942947 is about 12447.6080834833. The cubic root of 154942947 is about 537.1026197150.

The spelling of 154942947 in words is "one hundred fifty-four million, nine hundred forty-two thousand, nine hundred forty-seven".