55429742 has 4 divisors (see below), whose sum is σ = 83144616. Its totient is φ = 27714870.

The previous prime is 55429729. The next prime is 55429757. The reversal of 55429742 is 24792455.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24792455 = 5 ⋅4958491.

It is a junction number, because it is equal to n+sod(n) for n = 55429696 and 55429705.

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, 13857434 + ... + 13857437.

It is an arithmetic number, because the mean of its divisors is an integer number (20786154).

Almost surely, 2^55429742 is an apocalyptic number.

55429742 is a deficient number, since it is larger than the sum of its proper divisors (27714874).

55429742 is a wasteful number, since it uses less digits than its factorization.

55429742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27714873.

The product of its digits is 100800, while the sum is 38.

The square root of 55429742 is about 7445.1153113971. The cubic root of 55429742 is about 381.2831553357.

The spelling of 55429742 in words is "fifty-five million, four hundred twenty-nine thousand, seven hundred forty-two".