53405742 has 32 divisors (see below), whose sum is σ = 117710208. Its totient is φ = 16049376.

The previous prime is 53405741. The next prime is 53405743. The reversal of 53405742 is 24750435.

It is an interprime number because it is at equal distance from previous prime (53405741) and next prime (53405743).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53405741) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4608 + ... + 11315.

It is an arithmetic number, because the mean of its divisors is an integer number (3678444).

Almost surely, 2^53405742 is an apocalyptic number.

53405742 is an abundant number, since it is smaller than the sum of its proper divisors (64304466).

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

53405742 is a wasteful number, since it uses less digits than its factorization.

53405742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15984.

The product of its (nonzero) digits is 16800, while the sum is 30.

The square root of 53405742 is about 7307.9232344080. The cubic root of 53405742 is about 376.5846824292.

The spelling of 53405742 in words is "fifty-three million, four hundred five thousand, seven hundred forty-two".