4951642 has 4 divisors (see below), whose sum is σ = 7427466. Its totient is φ = 2475820.

The previous prime is 4951637. The next prime is 4951643. The reversal of 4951642 is 2461594.

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., 4247721 + 703921 = 2061^2 + 839^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (4951643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1237909 + ... + 1237912.

Almost surely, 2^4951642 is an apocalyptic number.

4951642 is a deficient number, since it is larger than the sum of its proper divisors (2475824).

4951642 is a wasteful number, since it uses less digits than its factorization.

4951642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2475823.

The product of its digits is 8640, while the sum is 31.

The square root of 4951642 is about 2225.2285275899. The cubic root of 4951642 is about 170.4445343788. Note that the first 3 decimals are identical.

The spelling of 4951642 in words is "four million, nine hundred fifty-one thousand, six hundred forty-two".