155542012 has 6 divisors (see below), whose sum is σ = 272198528. Its totient is φ = 77771004.

The previous prime is 155542003. The next prime is 155542021. The reversal of 155542012 is 210245551.

155542012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (155542003) and next prime (155542021).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19442748 + ... + 19442755.

Almost surely, 2^155542012 is an apocalyptic number.

It is an amenable number.

155542012 is a deficient number, since it is larger than the sum of its proper divisors (116656516).

155542012 is a wasteful number, since it uses less digits than its factorization.

155542012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38885507 (or 38885505 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 155542012 is about 12471.6483273062. The cubic root of 155542012 is about 537.7939399643.

Adding to 155542012 its reverse (210245551), we get a palindrome (365787563).

The spelling of 155542012 in words is "one hundred fifty-five million, five hundred forty-two thousand, twelve".