151391642 has 8 divisors (see below), whose sum is σ = 233225076. Its totient is φ = 73649952.

The previous prime is 151391641. The next prime is 151391657. The reversal of 151391642 is 246193151.

It can be written as a sum of positive squares in 2 ways, for example, as 149108521 + 2283121 = 12211^2 + 1511^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 151391599 and 151391608.

It is not an unprimeable number, because it can be changed into a prime (151391641) 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 in 3 ways as a sum of consecutive naturals, for example, 1022843 + ... + 1022990.

Almost surely, 2^151391642 is an apocalyptic number.

151391642 is a deficient number, since it is larger than the sum of its proper divisors (81833434).

151391642 is a wasteful number, since it uses less digits than its factorization.

151391642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2045872.

The product of its digits is 6480, while the sum is 32.

The square root of 151391642 is about 12304.1310948803. The cubic root of 151391642 is about 532.9673849851.

The spelling of 151391642 in words is "one hundred fifty-one million, three hundred ninety-one thousand, six hundred forty-two".