158423040 has 240 divisors, whose sum is σ = 570810240. Its totient is φ = 42024960.

The previous prime is 158423033. The next prime is 158423059. The reversal of 158423040 is 40324851.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 158422995 and 158423013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 829345 + ... + 829535.

It is an arithmetic number, because the mean of its divisors is an integer number (2378376).

Almost surely, 2^158423040 is an apocalyptic number.

158423040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 158423040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (285405120).

158423040 is an abundant number, since it is smaller than the sum of its proper divisors (412387200).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

158423040 is an equidigital number, since it uses as much as digits as its factorization.

158423040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230 (or 201 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 158423040 is about 12586.6214688454. The cubic root of 158423040 is about 541.0940781197.

Adding to 158423040 its reverse (40324851), we get a palindrome (198747891).

The spelling of 158423040 in words is "one hundred fifty-eight million, four hundred twenty-three thousand, forty".