152420746 has 4 divisors (see below), whose sum is σ = 228631122. Its totient is φ = 76210372.

The previous prime is 152420743. The next prime is 152420771. The reversal of 152420746 is 647024251.

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., 100220121 + 52200625 = 10011^2 + 7225^2 .

It is a super-2 number, since 2×152420746² = 46464167622393032, which contains 22 as substring.

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 (152420743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38105185 + ... + 38105188.

Almost surely, 2^152420746 is an apocalyptic number.

152420746 is a deficient number, since it is larger than the sum of its proper divisors (76210376).

152420746 is an equidigital number, since it uses as much as digits as its factorization.

152420746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76210375.

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 152420746 is about 12345.8797175414. The cubic root of 152420746 is about 534.1722968452.

Adding to 152420746 its reverse (647024251), we get a palindrome (799444997).

The spelling of 152420746 in words is "one hundred fifty-two million, four hundred twenty thousand, seven hundred forty-six".