155534042 has 4 divisors (see below), whose sum is σ = 233301066. Its totient is φ = 77767020.

The previous prime is 155534011. The next prime is 155534081. The reversal of 155534042 is 240435551.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 155475961 + 58081 = 12469^2 + 241^2 .

It is a junction number, because it is equal to n+sod(n) for n = 155533996 and 155534014.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38883509 + ... + 38883512.

Almost surely, 2^155534042 is an apocalyptic number.

155534042 is a deficient number, since it is larger than the sum of its proper divisors (77767024).

155534042 is an equidigital number, since it uses as much as digits as its factorization.

155534042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77767023.

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

The square root of 155534042 is about 12471.3287984882. The cubic root of 155534042 is about 537.7847542555.

Adding to 155534042 its reverse (240435551), we get a palindrome (395969593).

The spelling of 155534042 in words is "one hundred fifty-five million, five hundred thirty-four thousand, forty-two".