61380542 has 4 divisors (see below), whose sum is σ = 92070816. Its totient is φ = 30690270.

The previous prime is 61380503. The next prime is 61380547. The reversal of 61380542 is 24508316.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61380547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15345134 + ... + 15345137.

It is an arithmetic number, because the mean of its divisors is an integer number (23017704).

Almost surely, 2^61380542 is an apocalyptic number.

61380542 is a deficient number, since it is larger than the sum of its proper divisors (30690274).

61380542 is a wasteful number, since it uses less digits than its factorization.

61380542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30690273.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 61380542 is about 7834.5735046651. The cubic root of 61380542 is about 394.4666025831.

Adding to 61380542 its reverse (24508316), we get a palindrome (85888858).

The spelling of 61380542 in words is "sixty-one million, three hundred eighty thousand, five hundred forty-two".