151649642 has 16 divisors (see below), whose sum is σ = 239763240. Its totient is φ = 71827392.

The previous prime is 151649623. The next prime is 151649651. The reversal of 151649642 is 246946151.

It can be written as a sum of positive squares in 4 ways, for example, as 150283081 + 1366561 = 12259^2 + 1169^2 .

It is a super-2 number, since 2×151649642² = 45995227837456328, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 151649596 and 151649605.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21593 + ... + 27740.

Almost surely, 2^151649642 is an apocalyptic number.

151649642 is a deficient number, since it is larger than the sum of its proper divisors (88113598).

151649642 is a wasteful number, since it uses less digits than its factorization.

151649642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49417.

The product of its digits is 51840, while the sum is 38.

The square root of 151649642 is about 12314.6109154938. The cubic root of 151649642 is about 533.2699722472.

The spelling of 151649642 in words is "one hundred fifty-one million, six hundred forty-nine thousand, six hundred forty-two".