155542340 has 24 divisors (see below), whose sum is σ = 326918592. Its totient is φ = 62163680.

The previous prime is 155542301. The next prime is 155542351. The reversal of 155542340 is 43245551.

155542340 is digitally balanced in base 3 and base 9, because in such bases it contains all the possibile digits an equal number of times.

155542340 is strictly pandigital in base 9.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27647 + ... + 32793.

It is an arithmetic number, because the mean of its divisors is an integer number (13621608).

Almost surely, 2^155542340 is an apocalyptic number.

155542340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155542340 is an abundant number, since it is smaller than the sum of its proper divisors (171376252).

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

155542340 is a wasteful number, since it uses less digits than its factorization.

155542340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6667 (or 6665 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 155542340 is about 12471.6614771249. The cubic root of 155542340 is about 537.7943179893.

Adding to 155542340 its reverse (43245551), we get a palindrome (198787891).

The spelling of 155542340 in words is "one hundred fifty-five million, five hundred forty-two thousand, three hundred forty".