1055154243 has 32 divisors (see below), whose sum is σ = 1666570752. Its totient is φ = 590267040.

The previous prime is 1055154239. The next prime is 1055154259. The reversal of 1055154243 is 3424515501.

It is not a de Polignac number, because 1055154243 - 2² = 1055154239 is a prime.

It is a super-2 number, since 2×1055154243² = 2226700953041806098, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1055154243.

It is not an unprimeable number, because it can be changed into a prime (1055154203) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41746 + ... + 62072.

It is an arithmetic number, because the mean of its divisors is an integer number (52080336).

Almost surely, 2^1055154243 is an apocalyptic number.

1055154243 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1055154243 is a deficient number, since it is larger than the sum of its proper divisors (611416509).

1055154243 is a wasteful number, since it uses less digits than its factorization.

1055154243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20376 (or 20354 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 1055154243 is about 32483.1378256473. The cubic root of 1055154243 is about 1018.0567393878.

Adding to 1055154243 its reverse (3424515501), we get a palindrome (4479669744).

The spelling of 1055154243 in words is "one billion, fifty-five million, one hundred fifty-four thousand, two hundred forty-three".