428154139 has 8 divisors (see below), whose sum is σ = 500698880. Its totient is φ = 358454376.

The previous prime is 428154137. The next prime is 428154143. The reversal of 428154139 is 931451824.

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

It is not a de Polignac number, because 428154139 - 2¹ = 428154137 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 428154098 and 428154107.

It is not an unprimeable number, because it can be changed into a prime (428154137) 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, 710919 + ... + 711520.

It is an arithmetic number, because the mean of its divisors is an integer number (62587360).

Almost surely, 2^428154139 is an apocalyptic number.

428154139 is a deficient number, since it is larger than the sum of its proper divisors (72544741).

428154139 is a wasteful number, since it uses less digits than its factorization.

428154139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1422489.

The product of its digits is 34560, while the sum is 37.

The square root of 428154139 is about 20691.8858251248. The cubic root of 428154139 is about 753.7026615742.

The spelling of 428154139 in words is "four hundred twenty-eight million, one hundred fifty-four thousand, one hundred thirty-nine".