61457042 has 4 divisors (see below), whose sum is σ = 92185566. Its totient is φ = 30728520.

The previous prime is 61457041. The next prime is 61457069. The reversal of 61457042 is 24075416.

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., 33884041 + 27573001 = 5821^2 + 5251^2 .

It is a super-2 number, since 2×61457042² = 7553936022779528, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 61456996 and 61457014.

It is not an unprimeable number, because it can be changed into a prime (61457041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15364259 + ... + 15364262.

Almost surely, 2^61457042 is an apocalyptic number.

61457042 is a deficient number, since it is larger than the sum of its proper divisors (30728524).

61457042 is a wasteful number, since it uses less digits than its factorization.

61457042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30728523.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 61457042 is about 7839.4541901844. The cubic root of 61457042 is about 394.6304121887.

The spelling of 61457042 in words is "sixty-one million, four hundred fifty-seven thousand, forty-two".