155267442 has 90 divisors (see below), whose sum is σ = 386763069. Its totient is φ = 46522080.

The previous prime is 155267419. The next prime is 155267447. The reversal of 155267442 is 244762551.

It is a happy number.

155267442 is a `hidden beast` number, since 1 + 552 + 67 + 4 + 42 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 138791961 + 16475481 = 11781^2 + 4059^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=8811.

Its product of digits (67200) is a multiple of the sum of its prime divisors (105).

It is a junction number, because it is equal to n+sod(n) for n = 155267397 and 155267406.

It is not an unprimeable number, because it can be changed into a prime (155267447) by changing a digit.

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 44 ways as a sum of consecutive naturals, for example, 1744534 + ... + 1744622.

Almost surely, 2^155267442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155267442

155267442 is an abundant number, since it is smaller than the sum of its proper divisors (231495627).

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

155267442 is an equidigital number, since it uses as much as digits as its factorization.

155267442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214 (or 105 counting only the distinct ones).

The product of its digits is 67200, while the sum is 36.

The square root of 155267442 is about 12460.6356980693. The cubic root of 155267442 is about 537.4773072806.

The spelling of 155267442 in words is "one hundred fifty-five million, two hundred sixty-seven thousand, four hundred forty-two".